#18 Impossible to open files created with previous version (sh6)

[gianluca]

Dear,
I have a project file created with a previous version of your software (file extension sh6) but apparently now I cannot open it anymore. It only seems to open sh4 and sh5.
I tried to import it or to force opening (by changing extension or by changing file selection wildcard).
Nothing seems to work there.
Can you please help me? I use to use your software to create CHM and it worked very well... but now I just need to update my CHM file and I would't like to recreate it from scratch!
Thanks a lot,
Gianluca