Alan and AkumaTakeshi,
Firstly, sorry for not responding on time. I had some trouble in my job... It's good that alan found a workaround (?) while I'm not here.
However, as a developer, I want to find a
real cause of a problem.
And, now I believe I pinned the issue that Alan had. It is related to a Windows behaviour (that I didn't know) regarding file association management when a user changed the applications' default manually through GUI.
I also believe AkumaTakeshi is having exactly the same issue (through the report attached to the message #110. I previously didn't understand where to look at.
I'm now writing a workaround code. Please wait for a while.
-- alissa