It sounds like a problem with your windows profile and a permissions issue on your account or folder area. Outside the scope of this support but in the interim try copying your Logbook Pro data file which ends in .LBK typically found in your Documents/My Logbook Pro Files/v1 folder area and copy into a folder such as C:\Logbook Pro Data and then double-click the data file while Logbook Pro is closed and Logbook Pro will open it in the new location. Otherwise ZIP compress your .LBK data file and send the ZIP file in a support ticket.
It also could be a networking issue, i.e. Logbook Pro is not able to get out to the Internet to check for updates. Make sure your anti-virus/security software is not conflicting.