Bug in enumerations

[Zeljko Vrba <mordor@fly.srk.fer.hr>]

Hi! I've tried to combine enumerations with formulas:

---
\defineenumeration[definition][location=serried,text=Definicija,way=bychapter]
\definition
Za {\bf prazan} skup vrijedi
\placeformula\startformula
\forall x\in {\cal X}\mu_\emptyset(x)=0
\stopformula				<--- this is line 156
Za {\bf univerzalan} skup vrijedi
\placeformula\startformula
\forall x\in {\cal X}\mu_{\cal X}(x)=1
\stopformula
\par
---

and I get the following error message:

This is pdfTeX, Version 3.14159-14c (Web2C 7.3.1) (format=cont-hr 2000.1.2)  3 MAR 2000 18:19
**&/home/zeljko/cont-hr fuzzy
-- some material cut --
! Extra }, or forgotten \endgroup.
\par ->\egroup 
               \par \@@stopdefinitie {definition}\BeforePar {}\AfterPar {}
\par ->\egroup \par 
                    \@@stopdefinitie {definition}\BeforePar {}\AfterPar {}
\docomplexdoblanko ... \ifblankobuiten \else \par 
                                                  \ifvmode \ifblankoforceer ...

\complexdodoblanko ...ed {\docomplexdoblanko [#1]}
                                                  \fi 
\doifnumberelse ...donetrue \fi \ifdone \egroup #2
                                                  \else \egroup #3\fi 
\doifinstringelse ...{\@@@instring }{#2}#3\else #4
                                                  \fi 
...
l.156 \stopformula

-- I've marked the line in text which is line 156 in original document

? 
! Emergency stop.
\par ->\egroup 
               \par \@@stopdefinitie {definition}\BeforePar {}\AfterPar {}
\par ->\egroup \par 
                    \@@stopdefinitie {definition}\BeforePar {}\AfterPar {}
\docomplexdoblanko ... \ifblankobuiten \else \par 
                                                  \ifvmode \ifblankoforceer ...

\complexdodoblanko ...ed {\docomplexdoblanko [#1]}
                                                  \fi 
\doifnumberelse ...donetrue \fi \ifdone \egroup #2
                                                  \else \egroup #3\fi 
\doifinstringelse ...{\@@@instring }{#2}#3\else #4
                                                  \fi 
...
l.156 \stopformula

End of file on the terminal!

Here is how much of TeX's memory you used:
 869 strings out of 32668
 14648 string characters out of 162758
 307573 words of memory out of 1100001
 21678 multiletter control sequences out of 10000+15000
 16078 words of font info for 51 fonts, out of 200000 for 1000
 14 hyphenation exceptions out of 1000
 65i,19n,97p,329b,1707s stack positions out of 1500i,500n,1500p,50000b,5000s
Output written on fuzzy.dvi (5 pages, 6804 bytes).