Comment 5 for bug 2069006

From what I can see from the exception, koreader isn't transferring the same book uuid (or any book uuid) to calibre for every book, in at least some cases. That process happens on a non-gui thread in the wireless driver so no prompts are possible.

It is possible that koreader had a problem sending the uuid and subsequently fixed it. In this case the cached metadata kept by the wireless driver could be stale/wrong. You can try deleting the cache file, which in windows is at C:\Users\***USERNAME***\AppData\Local\calibre-cache\wireless_device.....

You can also tell the driver not to use metadata caching by unchecking the box "Use metadata cache" in the driver settings. Unsetting this box will make the connection process significantly slower but might work around whatever koreader is doing.