Recently we updated to TL 2018 in Debian unstable. Since then the generation of the automultiplechoice.sty from automultiplechoice.dtx fails:

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* No Configuration file found, using default settings. *
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)

Generating file(s) ./automultiplechoice.sty 

Processing file automultiplechoice.dtx (package) -> automultiplechoice.sty
! Undefined control sequence.
\GenericError  ...                                
                                                    #4  \errhelp \@err@     ...
l.54 ...}{\from{automultiplechoice.dtx}{package}}}
                                                  ^^M
? s
OK, entering \scrollmode...

This has worked in TL 2017 and I guess it is not a failure of TL. I tried the version from git too, but the problem was not solved. Do you have a fast idea how to solve it? Thanks!