Hey guys, TES4Gecko can't seem to be able to merge an .esp to a master file.

It asks me if I want to manage the merge. If not, it gives me an error "Merge Failed" and mentions something about dialogue topics.

If I say yes, it asks me what cells I want merged. I say all exterior cells.

Then, it asks me to put in a Starting Form ID. If I say no or give an invalid form, it gives the dialogue topics error. Any help would be appreciated

You'll need to resolve the error in the mod before merging. Doesn't the error do more than just mention "something" about dialogue topics? Form IDs perhaps?

Nope - only dialogue topic and merge plug-in errors are there.