If combo-box contains a question mark in one of it's entries, program can run and it works. However if .w file is saved, closed and reopened in AppBuilder or PDSOE, question mark(?) is quoted, several errors pops up and .w can not be compiled until quotation marks are removed.
The question mark ? is replaced with "?" and that collides with other quotes being used in the DEFINE VARIABLE phrase. If the quotes surrounding the question mark are removed, it works again. However on close and reopen of .w, compilation error pops up and quotes are back.