Modify the DBZ Tag Team without closing the emulator or the process

[LunaMoo]

You should describe exactly what you're trying to do and where it fails.

By what you said I can only guess you're trying to inject some code via external software, this will fail unless the software knows how to deal with mapped memory, also it might crash if you're using JIT since PPSSPP does some jit hacks and external software will interact with those hacks instead of game code. External cheating software like ie. Cheat Engine is only useful to search for things you later can track through disassembly within PPSSPP itself and even that popular software will crash in modern windows operating systems without using special workaround(which CE author explained deeper on his forums, and my CE table for PPSSPP includes).

If by "installing mod" you mean "injecting code" the best thing to do is to just inject that code using CWCheat format which is supported in PPSSPP natively, if you call yourself a modder aka can code in mips assembly to modify PSP games, looking for details about that should be no problem for you, PSP game plugins(not kernel ones!) are also supported, but I never bothered so can't tell much about those. Either way no reason to use external software.

PPSSPP project should never be compared to PCSX2, one began in ancient times and works like an ancient software, the other is completely modern and multiplatform, guess which is which yourself.^__^