Troubleshoot Circuit with FT232RL and PIC 12F629

I have an existing simple circuit that connects a PIC micro to a computer via FTDI's 232RL USB chip. Sometimes, the PC loses the ability to communicate with the device. If I unplug the device, wait 30 seconds, plug it back into the USB port, and restart my software service, I can connect to it again. I need help diagnosing the problem and creating a fix for it. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows? (depending on the nature? of the deliverables): a)? For web sites or? other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software? installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Microchip PIC 12F629 FTDI FT232RL