Ok, so I have not had any problems with my calculator until I (very regretfully) installed an app called MICROS. It is an app whos basic function is to edit the hex code of your calculator. I did not make any changes within MICROS, but every time I launched it, something seemed to go wrong, but a simple ram reset would fix it.
I uninstalled it, to free up some space for some games, and suddenly I am unable to use various functions of my calculator. I am unable to access libraries, and my calculator seems to dislike IF:THEN statements. I am also unable to use the RCL feature to copy programs into each other.
Specs:
TI 84 PCSE
DoorsCSE 8.2 installed (nothing seems to go wrong in this app, except program execution)
Lowercase Enabled (through DCSE 8.2)