Blue Prism working in a random way

Hi everyone,

I have an issue with Blue Prism because I have designed a process but this works in a random way.
When I launch the process the first time it works correctly but if I re-launch it a second time it freezes on an action, so I delete the action and do it again in the same way on the object and running the process it works.
After the correction and the run is ok, I try to run the process but it crashes again.

Can someone help me solve the problem?

Many Thanks