Indexing files.

[michailidisge]

The "Indexing files" loops forever, without any indication how long it may take or if it is stuck.

I have been synchronizing the same folders for years in my previous PC using the free version and it worked fine.

[HEIC-to-JPEG-Dev]

Thank you for your patience with this bug as I've been [trying] working with Microsoft over the name & design (they own the trademark). I think this is now concluded and development can continue, unfortunately it also means I need a re-design and to lose the "it's too close looking to SyncToy" before I can update it.

A rewrite is in the works which will fix the bugs, but I don't have a timescale just yet.

[carlosmb114-netizen]

I had the same problem, but I found the root cause, there were two files with the same name in the original (left) folder. It is strange but happened. Once deleted the duplicated file, synchronization works fine.
So problem solved