I know this is an old thread, but I hope you don't mind me adding my error messages to the ones already corrected previously....I am using a PIC16F636. It has (1)8-bit timer, (1)16-bit timer. I have aready commented out errors wsave2 and wsave3.

Why am I getting these errors?:
Error TIMER~1.ASM 489 : [224]local drive only for use in macros
Error TIMER~1.ASM 489 : [225]undefined symbol 'iflagreg'
Error TIMER~1.ASM 489 : [226]numeric constant or symbol name expected
Error TIMER~1.ASM 489 : [201]')' expected
Error TIMER~1.ASM 489 : [235]opcode expected instead of 'error'
Error TIMER~1.ASM 497 : [225]undefined symbol 'iflagreg'
Error TIMER~1.ASM 497 : [300]too many errors

I am trying to do a 20 minute and then a 50 minute event trigger using this process that you have show us. I really hope to get this working properly to salvage my project.