Hello,
I am the author of JRT and will try to address your concerns to the best of my ability.
Regarding the C:\JRT folder left behind after execution of the tool. This is one of the downsides of a batch based program. Since I am "calling" multiple batch files, the contents of the program need to be dumped somewhere. I could probably learn how to implement a "/uninstall" switch to remove the traces of the tool after the user is done using it to remove all traces of the tool.
The ERUNT folder is there for backup purposes. Incase the tool deleted parts of the registry that shouldn't have been removed you could run the ERDNT.EXE file within that folder to restore your previous registry settings. More information regarding ERUNT here.
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Regarding "Save Images" Firefox extension being deleted: This I'm guessing is a bad result of the heuristic scanning I have set up meant to target "Bcool" adware extensions. I will try to implement some type of whitelist so this problem does not occur very often.
Thanks for your feedback!
