Peter,
I have been running Mnemosyne 2.3.6 on Windows 10 from an SD Card without issue (aside of Mnemosyne getting confused about what USB port it is running from, which I am used to).
I just installed Mnemosyne 2.6 on the hard drive and immediately moved it to the USB. Running from either the hard drive or the USB, I get the following error:
Mnemosyne 2.3.6 still runs fine from the same USB.
Do I really need to be installing drivers, or is this some other issue?
Thanks, and thanks for all the support you provide. Mnemosyne is great.
Lawson