I have had the problem for about 9 months and everything worked fine until recently. Lately whenever I try to upload or download the scanner info in ARC396 or the Uniden program i get an error. In ARC396 it pops up a box that says "loop timeout" with the option to click OK. It will continue downloading the info from the scanner. however when it is done some of the systems are corrupted. There will be duplicate groups showing up in the systems or groups from another system all together. In the uniden software it will just give me an error that says "scanner read error" and will stop downloading the info. I am able to control the scanner from the computer with multiple programs without any problems. The only issues seem to be with uploading and downloading. I am using a serial cable and other devices work just fine with the same port as well. Anyone have any ideas on this?