Hi @Dimatek,
I am on the road at the moment, but here are the things that come to mind that I will suggest…
Check your web server logs for relevant errors at the time that you try to load the scp page.
If you use any server-side caching software to speed up the loading of your website, or any sort of a firewall solution, take a look at disabling and/or clearing caches.
You should try downloading the 1.14.4 zip again, extracting it again, and uploading / overwriting the files in your installation. Believe it or not, one or two people have solved similar issues by doing so.
If you’re using any plugins try disabling them.
Search this forum for the terms ‘white’ and ‘blank’. I know this type of thing has come up once or twice in the past. Normally I would do the search on your behalf but, again, I’m on the road at the moment.
If you are still having trouble, please fill out the following form with as much information as possible and I will take a look when I am back in front of my computer: