Control panel, configuration and others items blank

Ok it's done!
Always a blank page with this message: pms.uddeim: UddeIM main component not installed.

Therefore, I re-installed the uddeIM component and I could go to CB.
To verify, I renamed the previous plugin by removing the mention DISABLED and access to CB has again generate a blank page.
I handed the DISABLED mention to the plugin and access is OK again.

This solution works, but for me it is not satisfactory because there must be a problem in one of your programs or uddeIM.
Should I consider this problem resolved?

You installed UddeIMs CB plugin and probably Joomla plugin without installing the UddeIM component, which is why it kept erroring. You've an incomplete install of UddeIM. Either completely uninstall it or follow UddeIM installation instructions carefully.

uddeIM was installed at the same time as CB in early 2016 and everything was working properly until the last few days when I noticed that I no longer had access to CB!
I had uninstalled uddeIM yesterday thinking that it was him who posed problem!
I do not go to CB often, but I did a user update 2 or 3 months ago, and it was still working.
In the meantime, I had done the normal CB updates. Perhaps it was after one of them that the problem arose.
Well, if you think it's my fault, I will not argue any longer and you can close this post.
Regards

Your error provided below was coming from UddeIMs CB plugin.

www.joomlapolis.com/forum/149-usage/239449-control-panel-configuration-and-others-items-blank#306028

Likely due to version mismatch issues, bug, or something else related to UddeIM. I can say for sure as we're not the developers of UddeIM.

I had uninstalled uddeIM yesterday thinking that it was him who posed problem!

That would be a problem as you left the rest of UddeIM installed (its CB plugin and likely more).

If you've any further UddeIM issues I suggest posting to the below forums.

www.joomlapolis.com/forum/25-uddeim-plugin-and-component