i have a windows 8.1 computer and everytime i turn it on it states that greenshot hotkeys ctrl+printscreen could not be registered. this problem is probably caused by another tool claiming usage of the same hotkeys.
the snip it tool is the only one i see installed but it doesn't have a hotkey assigned to it?
I figured out the issue. Lenovo has a program called quicksnipservice, i had to run the batch file in the program folder to uninstall, rebooted the computer works like a champ now!! no more error messages.
Thanks for reporting back, this is good information for others who have the same issue.