Hello elvispt and welcome on forums
You seems the first to have those problem.
Can you send us your technical information with these procedure :
Liberkey Tools => Configuration =>Technical Information and click on
Send at the right bottom corner of the windows (cf image)
When you have send these information, can you try these (not sure that it's the solution) :
Close your liberkey and realise a backup of these files. Then, erase them.
LiberKeyTools\LiberKeyMenu\data\
icons.cacheLiberKeyTools\LiberKeyMenu\data\
icons32.cacheWhen you restart the Liberkey these icon's cache will be restore.
JP4U