I have Powerdirector 18 ultra for PC, it is the disc version. I have produced a few movies now with no issues. Now, with my latest project each time I edit a clip I lose sound for the entire project. The only way I can regain sound is to close the project and then re-open it. I have pulled up past projects and edited them again and get the same result so it is not related to the current project. Audio works during this time on all other files on the PC so it isn't the laptop. I am at a loss. Any help would be appreciated.