Am 06.05.2016 um 13:39 schrieb L.S.-Soc&Gam:
>
> I've searched through the mailing list, what the initial post to this 
> topic was, but i couldn't find it. If you're having trouble to make 
> context compile a document, try this:
>
> - TeXworks tools.ini doesn't need to be edited manually. It's the file 
> where TW saves the settings from " Edit -> Preferences -> Typesetting ".
> - First of all make sure, that you downloaded ConTeXt by using 
> "first-setup.exe"

That I did. Not *.exe though, being on a Linux OS, Xubuntu to be precise.

> - Then, you should add the folder where context.exe (and all 
> executables) are stored to your system paths: Use your browser to 
> navigate to the said folder, click on the address bar and copy the 
> full path. For me it looks like this: " 
> F:\Sandbox\ConTeXt\tex\texmf-win64\bin "
> - Then add this path to your windows system paths: go to your windows 
> control panel, double click " System "-> advanced settings -> 
> environment variables (or something like this), in the lower halfth 
> there is a window with a point " Path ". Double click it and paste 
> your CTX folder pretty much at the top of the section or if there is 
> only one line, add it at the beginning, and use semikolon ( ; ) to 
> seperate it from the rest. Save your settings and you should be good 
> to go.
> - to test if you did it correctly open your command line and simply 
> enter " context.exe --version ". If command line tells you, that no 
> context.exe was found, then you might try to add the context \bin 
> folder to your system paths again

Translating this into Linux, all this works fine.

> - if command line tells you the version of context, then you can proceed:
>
> - start TW, " Edit -> Preferences -> Typesetting ". There check the 
> upper halfth for the context folder you added to your system paths. If 
> you've added it at the beginning, it should be at the top here as 
> well. Alternatively use the arrows to push context\bin it to the very top
>
> NOTE: this is important. if you have MikTeX installed for example and 
> if its folder is listed above your context folder, TW will try to use 
> exe files from the MikTeX folder. so make sure that context\bin is 
> above anything related to tex, context or lua.

Thanks for your detailed description, but I'm afraid that's not it. 
Meanwhile I uninstalled all my texlive packets and reinstalled TeXworks 
without any of the texlive components, and reinstalled ConTeXt 
standalone strictly according to this: 
http://wiki.contextgarden.net/Ubuntu#With_ConTeXt_Standalone_.E2.80.93_should_work_with_all_Ubuntu_versions 
-- and the problem persists. mtxrun is found and started allright, but 
it complains that it can't find some files, that a database is outdated, 
and that it can't find some other files and stops without a pdf. Below 
is the complete console output as shown in TeXworks. Calling "context 
test" in a terminal window works fine, though.

Cheers -- Thomas

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mtxrun | forcing cache reload

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/home/thomas/texmf/web2c' from specification 'home:texmf/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on weird path 
'/usr/local/context/bin' from specification 'selfautoloc:'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/bin/share/texmf-local/web2c' from specification 
'selfautoloc:/share/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/bin/share/texmf-dist/web2c' from specification 
'selfautoloc:/share/texmf-dist/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/bin/share/texmf/web2c' from specification 
'selfautoloc:/share/texmf/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/bin/texmf-local/web2c' from specification 
'selfautoloc:/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/bin/texmf-dist/web2c' from specification 
'selfautoloc:/texmf-dist/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/bin/texmf/web2c' from specification 
'selfautoloc:/texmf/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on weird path 
'/usr/local/context' from specification 'selfautodir:'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/share/texmf-local/web2c' from specification 
'selfautodir:/share/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/share/texmf-dist/web2c' from specification 
'selfautodir:/share/texmf-dist/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/share/texmf/web2c' from specification 
'selfautodir:/share/texmf/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/texmf-local/web2c' from specification 
'selfautodir:/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/texmf-dist/web2c' from specification 
'selfautodir:/texmf-dist/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/texmf/web2c' from specification 
'selfautodir:/texmf/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'$SELFAUTOGRANDPARENT/texmf-local/web2c' from specification 
'$SELFAUTOGRANDPARENT/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on weird path 
'/usr/local' from specification 'selfautoparent:'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/share/texmf-local/web2c' from specification 
'selfautoparent:/share/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/share/texmf-dist/web2c' from specification 
'selfautoparent:/share/texmf-dist/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/share/texmf/web2c' from specification 
'selfautoparent:/share/texmf/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/texmf-local/web2c' from specification 
'selfautoparent:/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/texmf-dist/web2c' from specification 
'selfautoparent:/texmf-dist/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/texmf/web2c' from specification 'selfautoparent:/texmf/web2c'

resolvers | resolving |

resolvers | resolving | warning: no lua configuration files found

resolvers | resolving | no texmf paths are defined (using TEXMF)

resolvers | resolving |

mtxrun | the resolver databases are not present or outdated

resolvers | resolving | using suffix based filetype 'lua'

resolvers | resolving | remembering file 'mtx-context.lua' using hash 
'lua::mtx-context.lua'

resolvers | resolving | using suffix based filetype 'lua'

resolvers | resolving | remembering file 'mtx-contexts.lua' using hash 
'lua::mtx-contexts.lua'

resolvers | resolving | remembered file 'mtx-context.lua'

resolvers | resolving | using suffix based filetype 'lua'

resolvers | resolving | remembering file 'mtx-t-context.lua' using hash 
'lua::mtx-t-context.lua'

resolvers | resolving | using suffix based filetype 'lua'

resolvers | resolving | remembering file 'mtx-t-contexts.lua' using hash 
'lua::mtx-t-contexts.lua'

resolvers | resolving | remembered file 'mtx-t-context.lua'

resolvers | resolving | using suffix based filetype 'lua'

resolvers | resolving | remembering file 'context.lua' using hash 
'lua::context.lua'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/home/thomas/texmf/web2c' from specification 'home:texmf/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on weird path 
'/usr/local/context/bin' from specification 'selfautoloc:'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/bin/share/texmf-local/web2c' from specification 
'selfautoloc:/share/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/bin/share/texmf-dist/web2c' from specification 
'selfautoloc:/share/texmf-dist/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/bin/share/texmf/web2c' from specification 
'selfautoloc:/share/texmf/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/bin/texmf-local/web2c' from specification 
'selfautoloc:/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/bin/texmf-dist/web2c' from specification 
'selfautoloc:/texmf-dist/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/bin/texmf/web2c' from specification 
'selfautoloc:/texmf/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on weird path 
'/usr/local/context' from specification 'selfautodir:'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/share/texmf-local/web2c' from specification 
'selfautodir:/share/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/share/texmf-dist/web2c' from specification 
'selfautodir:/share/texmf-dist/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/share/texmf/web2c' from specification 
'selfautodir:/share/texmf/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/texmf-local/web2c' from specification 
'selfautodir:/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/texmf-dist/web2c' from specification 
'selfautodir:/texmf-dist/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/context/texmf/web2c' from specification 
'selfautodir:/texmf/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'$SELFAUTOGRANDPARENT/texmf-local/web2c' from specification 
'$SELFAUTOGRANDPARENT/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on weird path 
'/usr/local' from specification 'selfautoparent:'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/share/texmf-local/web2c' from specification 
'selfautoparent:/share/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/share/texmf-dist/web2c' from specification 
'selfautoparent:/share/texmf-dist/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/share/texmf/web2c' from specification 
'selfautoparent:/share/texmf/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/texmf-local/web2c' from specification 
'selfautoparent:/texmf-local/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/texmf-dist/web2c' from specification 
'selfautoparent:/texmf-dist/web2c'

resolvers | resolving | looking for 'texmfcnf.lua' on given path 
'/usr/local/texmf/web2c' from specification 'selfautoparent:/texmf/web2c'

resolvers | resolving |

resolvers | resolving | warning: no lua configuration files found

resolvers | resolving | no texmf paths are defined (using TEXMF)

resolvers | resolving |

resolvers | resolving | remembered file 'mtx-context.lua'

resolvers | resolving | remembered file 'mtx-contexts.lua'

resolvers | resolving | remembered file 'mtx-context.lua'

resolvers | resolving | remembered file 'mtx-t-context.lua'

resolvers | resolving | remembered file 'mtx-t-contexts.lua'

resolvers | resolving | remembered file 'mtx-t-context.lua'

resolvers | resolving | remembered file 'context.lua'

mtxrun | unknown script 'context.lua' or 'mtx-context.lua'

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