I have recently purchased Acid Pro 10 and I can't open the programme anymore due to Error code: -59. I also had a lot of problems while trying to finish off my first project using the new features, where it would constantly crash and force shut down. Is there anything I can do to fix this?

On the Acid pro icon on desktop, hold Shift OR ctrl and double click it, see if it gives a cache window, if so, put a check in "clear cache" and clear it. Its possible it still might give you error. Clean un-install all Magix products from your PC and re-install fresh. See if this works. I didn't have that same error but it worked for me. Acid is still crashing randomly on me but at least no errors.