7+ taskbar tweaker could not load library (1)

btw I'm on win10 1809 and 7+ is 5.6.0.2 (beta)

That's strange. It's as if the code of 7+ Taskbar Tweaker was successfully injected into the explorer process, but none of it ran successfully. Can you provide the crash report from the event viewer?

How do I find event logs when a program crashes?

Not really sure if this is the right thing but your link for instructions how to provide the log you asked for seems to be broken - might wanna check that 

https://drive.google.com/open?id=1bQdS1u203QVfHpJQot9lOGB-xhkvXXr_

The link I provided works for me. Here it is again, in a code block:

https://www.cyberlink.com/support/faq-content.do?id=10449

Your file is OK, too. It says that the source of the "crash" is a hang. So there wasn't actually a crash, but explorer wasn't responsive for some amount of time, so the system restarted it.

Does the issue happen only at startup? If you run the tweaker when the system already running for some time, do you see the same problem?

My guess would be that a combination of too many start-up programs and maybe a slow computer causes too much overhead, and explorer hangs for a considerable time so it's being restarted by Windows.

I can't think of a straightforward solution for this. You can try reducing the number of running programs at startup, or try to use a tool which allows to run programs at startup with a delay (there are some available, Google for it).

Weird - now the link works like intended - hm... Anyway - I troubleshooted it by coping a shortcut in the autostart folder - only problem now is that I get the GUI poping up every time I fire up my PC. Is there any -command I could put into the shortcut so that the program opens hidden?

Yes, there's the -hidewnd command. I'm glad that it works now :)

Thank you