"Unrecgnized tab" after editing a blueprint

[anonymous_user_cc5b755f1 (anonymous_user_cc5b755f)]

Hello,

I am having an issue with Unreal Engine 4.17.2, I am running windows 10 64 bit

The problem I’m having is whenever I create a new blueprint such as a Game Mode or a Player Controller. if I go into the blueprint and make any changes, such as checking the box for “show mouse cursor”, if I close out and re-enter the blueprint I get some blank windows and one that says “unrecognized tab”.

This even happens on a blank project with no starter content.

I’ve tried verifying the install, even reinstalling, and it still doesn’t work.

For reference, here’s how the blue print looks upon first opening.

And how it looks after having a single thing changed and re-opened.

Please tell me how to fix this, I can literally not make any progress with my projects with this issue.

Thank you.

[anonymous_user_6225a957]

I had the same problem. I did the same ways to fix the problem you already mentioned but they did not work until - I started the project with a new name.

For example my project was called World and instead I made a brand new project with the new name as World2. And it worked.

I think you and I have deleted the project for some reason and then tried to make a new project with the same exact name. Unreal Engine must have kept some info from the old project (with lots of important information missing in the new project). Unreal must think it is still working with the old project.