Same thing for me. Anytime i try to open a level map from many different projects purchased off of the Market Place I receive the “Out of video memory trying to allocate a texture!” error. The same exact projects open fine in 4.23. I have posted in the Answer Hub but no luck figuring it out. Hope someone can lead us in the right direction. I am running a GeForce 1080 so I wouldnt think it is actually running out of memory but I dont know.