I've narrowed it down to two lines.
Set up lines are:
Code: nbutts% = 8 : REM toolbar buttons
DIM button%(nbutts%-1), buttid%(nbutts%-1), buttip$(nbutts%-1)
button%() = 6, 7, 5, 14, 12, 13, 11, 10
buttid%() = 100, 101, 102, 104, 105, 106, 107, 108
buttip$() = "New","Open","Delete","Print","Search","Search within"+CHR$13+"current listing","Help","Options"
Lines where it hangs:
Code: htool% = FN_createtoolbar(nbutts%,button%(),buttid%())
PROC_addtooltips(htool%,nbutts%,buttip$(),buttid%())
As I say, this works fine on my pc.