Thanks for your reply.
Why did you remove the process id in your Exception message?
The original exception printed in the runtime log is that
ch.ivyteam.checking.InvalidFormatException: <Ss1/17B1A415B28B998A> didn't match format: <Process-Start Path>
Error Id: <1880D8649F0729BB>
How did you copy the HTML Dialog the other package?
I use the copy function of ivy designer. Still, I face the same exception.
I checked the copied dialog and it has different Pid from the original one