There may be a bug: ver 5a
When in the "edit entire file" mode there may be a problem with "delete function" or the "save" function.
When deletions are made at random or from top down or bottom up and the the file is "saved", a line becomes "high lighted". Sometimes upon the next deletion the "encountered a problem and must close" warning shows and the program shuts down.
I can avoid the shut down by "pre-empting", that is, by immeadiately closing "edit" when the blue line appears and re-starting "edit" if more deletions are wanted.
No apparent damage is done by the unwanted shutdown except the previously deletions may not saved.
I have experienced this behavior on several different deck files so far.
ver 07-5a
Winxp home
one gig ram
This will be fixed in the next release.
Thanks for reporting!