First of all , great work on developing GCbasic. It has enabled me to do some very high functioning code sets that I would never have fathomed given my ineptness with C/C++ language.
I was looking forwarded to the enhancements provided by the recent available upgrade but none of my programs work that have been compiled with this release. My gut feel it has something to do with the subroutine improvements. Most of my programs utilize a VFD display for which I wrote subs very similar to your structure in lcd.h to print or send strings, hex, & ints.
If you have any immediate thoughts of a resolution/ compatibility conflicts ... well that would be great. I attahed example of code. I am using exclusively a 16F690 PIC
Great job and thanks for the awesome tool.