Sometimes I start FRD to just pop out the already running instance, but with ESET installed it just freezes (the main window's not responding) and cannot be closed.
Please remove the check for ESET paths that turn off the instances check as running the second FRD instance actually locks the UI while the program (imho) tries to read the same database as the first instance.
I've edited the MainApp.Class file (https://uloz.to/file/dPIPtxKr6mdh/frd-jar) to check invalid paths instead of ESET paths and FRD has no issues checking other instances when ESET is installed (v12 - the latest).