Monster Hunter Freedom Unite [EU]

[LunaMoo]

If you freeze any of the values - don't. External programs(CE for sure) can't properly freeze values in PSP memory inside PPSSPP and depending on freeze frequency in few moments it leads to some kind of corruption and ends up showing values as "??" which you cannot modify, I belive that fits your description.

If that's your problem, just remember to only "activate"(by putting a cross in the square) scripts and labels that hide other entries, script is only one and all labels which hide anything beyond are colored green, so just avoid activating any other entries and it should be ok.