UE4.26 Virtual Texture UDIM 2048 Texture not recognized as ^2

Greetings Community - I am trying to get UDIMS to work in UE4.26 with some tests. I want to import four 2048 .jpg files with the correct naming convention: basename.1001.jpg then 1002, 1011 and finally 1012.

I have enabled virtual texture support. I have set minimum texture size to consider for VT to 2048.

When importing, EU4 returns error: Failed to create asset with reason being it’s a non power of 2 image, which it isnt. I have double checked about twenty times. If I remove the UDIM naming convention, it imports just fine, obviously now it wont scan for the remaining UDIMS in the source directory etc.

I’ve scoured the internet for an answer to no avail - Does this have something to do with the padding settings? Should I be saving my textures at a size less the padding amount?

I’d appreciate some help with this - Thanks