FX editor window just black

After closing a project and re-opening it later, some of the effects editor windows are just black. The effects do work fine and the setting have been kept as when I saved the projects, but I can´t access the settings. Any ideas?
TIA Klaus

Hi, there.
We really need more detail.
Cubase Pro? Artist?
Windows? MacOS?
System specs: CPU, RAM, audio interface.
Answers depend on this info.
Also, browse the forum, respond to a half a dozen posts (a simple “I agree” or such like), and you’ll be able to post a screenshot. We love screenshots!

If I may add: what kind of graphic card and which plugins are affected? Same company by any chance?
Are the windows pitch black (or can you see fields with numbers = generic editor)?

Thanks for your response, Reco!

  1. The windows are absolutely pitch black.
  2. The plugins affected so far are by Waves (e.g. C4) and IKMultimedia (e.g. TR5). Whereas Steinberg plugins (e.g. RoomWorks) show up reliably.
  3. Graphics card: AMD Radeon 496Mb

Windows 11, Cubase 14 LE

I reckon this is the culprit. I had the same issue, long ago. Bought the cheapest GPU I could find (had 2 gigs of RAM), problem solved.
If you remove some plugins do they display properly?
In my experience, Waves needs a decent GPU if you want to load many of them.

What @Googly_Croft said: I would put my money on the graphic card, too. Have you checked on driver updates for your graphic card? If this doesn’t help I would try to replace it with a more recent one.

Thanks a lot, guys!
The GCU is up to date, so I will get a better one.
In the meantime, I will use the curious workaround that I accidentally found this morning:
When I create a new FX track, the old black FX windows suddenly reveal their content. Doesn´t seem to make much sense, but oh well, at least it works.