In case that you are having some problem running Aseprite, you can
execute it with the
--debug option in the command line.
After running Aseprite, you will see that a
Aseprite-v1.2-DebugOutput.txt file (or with a similar name) will
be created in your desktop. You can send us that file at
firstname.lastname@example.org so we can help us
solving your specific problem.
On Steam the
--debug parameter is added in the launch options: