[texworks] Error with Lua version

[Alain Delmotte]

Hi Stefan,

When Lua is implemented there is a problem, under Windows, with the 
"Typeset" button of the tools bar.

When one start typesetting, the green button (with a right pointing 
triangle) turns red (with a cross).
If there is an error, clicking on the red button crashes TeXworks, which 
should halted by the terminate procedure of Windows. (you know, the one 
offering later the possibility to report to MicroSoft)

This doesn't happen with the base TeXworks or the one with the print 
capability.

Alain