The trigger input of the PWM was not connected. After connection with an input GPIO set to double sync the project compiled error-free.
There are some components not on latest revision. Consider updating (Creator v3.3 CP3 -> Project -> Update Components)
Ah, I'm sorry! I forgot the project contained two different files. It was the "pcbtesttablet1" project that required attention, which does have the trigger pin connected. The "design01" project was created by mistake. Thanks!
Apart from your self-made warnings and errors ;-)
Set trsignal input to "Double Sync".
That worked!! I can't believe it's such a simple setting that I overlooked. Spent 4 hours trying to find it, and I feel so dumb.
（ ・ω・） Thanks Bob~~
You're always welcome!