You can bind or shroud code so that it can start up faster later (the parsing is already done). This is done by using command line options:
-s shroud -c shroud without deleting any symbol information -b bind
exw eu.ex -s my_file.exw oexw -c win32lib.ew oexw -b my_file.exw
Additionally, immediately after the -s or -b option, you may specify the -full_debug option. This will preserve the source lines for lines where "with trace" is in effect, and you will get a normal traceback of the last 10 lines in the ex.err file.