Hi, I am Currently using civil3d 2015 while busy on a DWG when trying to save the error message 'the drawing is write protected' This does not happen every time and is random at best once or twice a day. If you guys have a solution please let me know it is very annoying and counter productive This problem is experienced with a couple of our pc's in the office, we use a file server for saving our drawings Specs, Core i7-6700K 32G ddr4 ram GTX 960 4gb 256gb SSD raid