After upgrading from Lightroom 5.0 to 5.2, I have received two blue screen of death while using lightroom. Both occurrences were while in the develope module, and I have not seen any BSOD during any other use of the PC. They are 0X101 (on 9/24) and 0X1E (on 9/29) The first one caused a loss of the LR catalog and when I relaunched Lightroom 5, it acted like it was the first time it had opened. I had to point Lightroom to a backup of the catalog and consequently lost data. This is twice in 1 week. Any clues as to why? I am running a 8 core AMD processor with 32 GB memory and an AMD Firepro 4900 graphics card with the latest driver. I have not seen any errors in Lightroom 5.0 or earlier versions, in fact, I have not had any issues with Lightroom till this latest version.