DPP 4.7.20 installs, runs once, won't run again

[cjjthomp]

I upgraded from DPP 4.3 to DPP 4.7.20 yesterday, opened it today and converted about 100 raws to JPEG then closed it.

Now when I try to open it, all I get is a black panel with the title "Digital Photo Professional ver.4".

I've tried re-installing, no luck.

I uninstalled all the Canon utilities and installed only DPP - still no luck.

I'm running Windows 10 64-bit.

Anyone else in the same boat?

Thanks,

Jeff

Calgary, Canada

[cjjthomp]

Many thanks, Ray! The user config was the problem and I'm back in business.

Hopefully, I'll not be bothering you again this year, so enjoy your Christmas and all the best to you in 2018.

Jeff,

Calgary, Canada

[Ray-uk]

That's great, just a pity that it was such a long procedure to get it going again.

At least it's a huge relief to know that you haven't got to re-install Windows

[PaulSoebekti]

Thank you Ray.

Your suggestion saved my day, today!

Merry Christmas.

Paul

[richrd0001]

This solved my failure to start problem but I have another problem.

Before I even got to the problem of the program not starting I got a message that I needed to change the display size before the program would launch. I reduced the text size to 100% and then got DPP to sort of start but then it would disappear. The failure to start problem was solved by this fix here as I said but I still have this display size problem. I changed the display size back to 150% but the app would not lauch. The same display size error message appears and no start.