Symptom:
Caldera fails to open and splash screen shows "starting software".
Problem:
When Caldera is not correctly closed like under OSX (Power failure, Force Close etc.) or when X11/Xquartz was closed instead of Caldera.
Or under Linux when a power failure occurred, it could happen that the preview images are corrupt which then prevents Caldera from starting.
Another symptom is blank or black preview images when Caldera does start.
Solution:
If Caldera doesn't open at all but splash screen appears very shortly or when icon bounces up and down then start Caldera from terminal and check for errors giving clues what's wrong.
On Linux based install, at the prompt type caldera
On a Mac based install in terminal type /opt/caldera/bin/caldera
One thing to try is to rename the .cas folder in the user folder to lets say .casold
So for Linux (assuming Caldera user):
mv /home/caldera/.cas /home/caldera/.casold
Now remember that workflows, hotfolders, custom color libraries etc. will be moved to the .casold folder.
To move back.
rm -rf /home/caldera/.cas
and then:
cp /home/caldera/.casold /home/caldera/.cas