Hi,

> if the user presses 'Tab' or 'Ctrl'+'I' , i get the menu manager internal consistency error

Do you only get an error on these key combinations? If so, this looks like they trigger some code that finally leads to the crash. Do you have any ON KEY LABEL code, KeyPress events, popups, menu items, etc. that respond to this key combination?

If you can't find one, use SET COVERAGE TO someFile1.txt before you activate the popup. Then perform the same actions twice, once without pressing TAB and the other time with pressing TAB. Before you run the code the second time, change the SET COVERAGE TO line to someFile2.txt. When you are done, compare the two files to find any differences in the code that is executed in both cases.