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A problem has arisen up since previous versions, where code without a =
problem now raises an error.

This is the afflicted code:
	% Assign values to \locationbox.
	\doif{top}{\placexlocation}%
		{\def\startlocationbox{\vtop\bgroup\vss}}%
	\doif{center}{\placexlocation}%
		{\def\startlocationbox{\vcenter\bgroup}}%
	\doif{bottom}{\placexlocation}%
		{\def\startlocationbox{\vbox\bgroup}}%

And it is used here:
	\setbox\placexbox=3D\startlocationbox
		\ignorespaces

Previously this worked without a hitch, now the error is:
tex error       > tex error on line 9 in file ./familie-events.tex: ! A =
<box> was supposed to be here
<to be read again>=20
\vcenter=20
\startlocationbox ->\vcenter=20
                             \bgroup=20
\dostartcontentplacexinline ...ables \par \setbox \placexbox =
=3D\startlocationbox=20
                                                                         =
       \ignorespaces=20
<to be read again> \syst_helpers_single_empty_one_nop=20
                                   \xmlflush=20
\21>:xmlplc:placexcontent ...le=3D\xmlatt {#1}{alttitle}]}\startcontent =
\xmlflush=20
                                                                         =
       {#1}\stopcontent=20
l.9 }

I can try to make a minimal example, but not without the afflicted =
module of some 800 lines. So perhaps the problem will be located by the =
experts at first sight. It is of course the \vcenter playing havoc, =
because replacing it by \vtop or \vbox makes the error disappear.

Thanks for looking into it, because my work more or less depends on this =
code working in good order.

dr. Hans van der Meer



--Apple-Mail=_B61CFDC9-9BA3-4D3A-AE94-FFDEEBD23085
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	charset=us-ascii

<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D"">A =
problem has arisen up since previous versions, where code without a =
problem now raises an error.<div class=3D""><br class=3D""></div><div =
class=3D"">This is the afflicted code:</div><div class=3D""><div =
class=3D""><font face=3D"Courier" class=3D""><span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>% Assign =
values to \locationbox.</font></div><div class=3D""><font face=3D"Courier"=
 class=3D""><span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>\doif{top}{\placexlocation}%</font></div><div class=3D""><font =
face=3D"Courier" class=3D""><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">		=
</span>{\def\startlocationbox{\vtop\bgroup\vss}}%</font></div><div =
class=3D""><font face=3D"Courier" class=3D""><span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>\doif{center}{\placexlocation}%</font></div><div class=3D""><font =
face=3D"Courier" class=3D""><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">		=
</span>{\def\startlocationbox{\vcenter\bgroup}}%</font></div><div =
class=3D""><font face=3D"Courier" class=3D""><span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>\doif{bottom}{\placexlocation}%</font></div><div class=3D""><font =
face=3D"Courier" class=3D""><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">		=
</span>{\def\startlocationbox{\vbox\bgroup}}%</font></div></div><div =
class=3D""><br class=3D""></div><div class=3D"">And it is used =
here:</div><div class=3D""><div class=3D""><font face=3D"Courier" =
class=3D""><span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>\setbox\placexbox=3D\startlocationbox</font></div><div =
class=3D""><font face=3D"Courier" class=3D""><span =
class=3D"Apple-tab-span" style=3D"white-space:pre">		=
</span>\ignorespaces</font></div></div><div class=3D""><br =
class=3D""></div><div class=3D"">Previously this worked without a hitch, =
now the error is:</div><div class=3D""><div class=3D""><font =
face=3D"Courier" class=3D"">tex error &nbsp; &nbsp; &nbsp; &gt; tex =
error on line 9 in file ./familie-events.tex: ! A &lt;box&gt; was =
supposed to be here</font></div><div class=3D""><font face=3D"Courier" =
class=3D"">&lt;to be read again&gt;&nbsp;</font></div><div =
class=3D""><font face=3D"Courier" =
class=3D"">\vcenter&nbsp;</font></div><div class=3D""><font =
face=3D"Courier" class=3D"">\startlocationbox =
-&gt;\vcenter&nbsp;</font></div><div class=3D""><font face=3D"Courier" =
class=3D"">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp;\bgroup&nbsp;</font></div><div class=3D""><font face=3D"Courier" =
class=3D"">\dostartcontentplacexinline ...ables \par \setbox \placexbox =
=3D\startlocationbox&nbsp;</font></div><div class=3D""><font =
face=3D"Courier" class=3D"">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; \ignorespaces&nbsp;</font></div><div =
class=3D""><font face=3D"Courier" class=3D"">&lt;to be read again&gt; =
\syst_helpers_single_empty_one_nop&nbsp;</font></div><div class=3D""><font=
 face=3D"Courier" class=3D"">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp;\xmlflush&nbsp;</font></div><div class=3D""><font =
face=3D"Courier" class=3D"">\21&gt;:xmlplc:placexcontent ...le=3D\xmlatt =
{#1}{alttitle}]}\startcontent \xmlflush&nbsp;</font></div><div =
class=3D""><font face=3D"Courier" class=3D"">&nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
{#1}\stopcontent&nbsp;</font></div><div class=3D""><font face=3D"Courier" =
class=3D"">l.9 }</font></div></div><div class=3D""><font face=3D"Courier" =
class=3D""><br class=3D""></font></div><div class=3D"">I can try to make =
a minimal example, but not without the afflicted module of some 800 =
lines. So perhaps the problem will be located by the experts at first =
sight. It is of course the \vcenter playing havoc, because replacing it =
by \vtop or \vbox makes the error disappear.</div><div class=3D""><br =
class=3D""></div><div class=3D"">Thanks for looking into it, because my =
work more or less depends on this code working in good order.</div><div =
class=3D""><br class=3D""><div class=3D"">
<div style=3D"color: rgb(0, 0, 0); letter-spacing: normal; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;" class=3D""><div style=3D"color: rgb(0, 0, 0); =
font-family: Helvetica; font-style: normal; font-variant-ligatures: =
normal; font-variant-caps: normal; font-variant-east-asian: normal; =
font-variant-position: normal; font-weight: normal; letter-spacing: =
normal; line-height: normal; orphans: 2; text-align: -webkit-auto; =
text-indent: 0px; text-transform: none; white-space: normal; widows: 2; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;" class=3D"">dr. Hans van der Meer<br class=3D""><br =
class=3D""></div></div>
</div>
<br class=3D""></div></body></html>=

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