Weasel Mods

can i install verr'sza(bg1ee) on EET? 

it has "File tags: BG1 NPC, BG1EE, EET, NPC, NPC BG, Romance, SoD"

does EET file tag mean that it can be installed on EET?

From what I understand, yes. Sorry, I do not use EET and such compatibility is usually provided by EET fans. It has been checked recently:
https://forums.beamdog.com/discussion/co...nt_1221330

It's hard to say anything else without knowing what error you are getting.

EDIT:
Even though I think it was updated so that it can be installed on EET, you may also try to use "the old approach":
https://forums.beamdog.com/discussion/co...nt_1186388