Hello, I have spent hours researching this issue today without joy. Visio 2010 has been downloaded to my PC and is sat in C:Temp; however, when I open the download in explorer and choose mount using VCD I get the error message: Error: Can't open VCD! Also, there is no virtual sheep visible in explorer although I have selected to have 2 drives. I have ensured that Windows is set to 'show empty drives' too. The version is VCD 18.104.22.168 and Windows 7 is my operating system. VCD has been used on this PC to mount images before. Any help would be really appreciated. Thanks. __________________________________ Update: An uninstall, then re-install of the latest version of VCD has sorted the issue. Perhaps updates were required before VCD 22.214.171.124 became compatible with the Visio 2010 download? Thanks for looking anyway all!