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! Improper \prevdepth.
\beginmulticolumns ...olumndepth {\the \prevdepth 
                                                  }\begingroup \leftskip 1\l...
\complexstartcolumns ...nstrue \beginmulticolumns 
                                                  \fi \fi 
<argument> ...!balance =\v!yes , \c!align =\v!no ]
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\firstofoneargument #1->#1
                          
\redostartitemgroup ... \c!align =\v!no ]\fi \fi }
                                                  \ifconditional \fittinglis...
\dostartitemgroup ... {\dodostartitemgroup [#2][]}
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