I have a Windows XP system running my observatory and have been using PHD2 successfully.
Today I upgraded to 2.6.3 dev3 and it fails to run with the error message that winusb.dll cannot be found.
I've searched for the drivers but cannot find a link on the Microsoft website presumably because xp is no longer supported.
Is winusb.dll essential for the latest version or is it a bug? If it is essential could the driver installation be included in the PHD2 install file?
Regards
Roy