Quote - I have the same problem.  I have 7.4 infinite, latest actual build (not the new beta that came out today), and XP 64.

Edit:  I actually noticed this the past day or so, as I've been trying to work with the layers again... it's been frustrating to say the least.

Yes, I too am using the latest build of 7.4 42999 and like I said, even though I was not using the Material Editor in much detail prior to version 7.4, I don't recall this problem before. It also does not matter if it is Mac or PC, 32 or 64 bit, as it is the same issue regardless.  They are looking at the sample file I sent them so hopefully they will have an answer or at least something to say regarding possible bugs in 7.4 causing this.

It must be something going on because you and two others I have heard from are having this problem too.

Jeff

Development on: Mac Pro 2008, Duel-Boot OS - Snow Leopard 10.6.6 & Windows 7 Ultimate 64bit, 2 x 2.8 GHz Quad-Core Intel Xeon , 10GB 800 MHz DDR2 RAM, NVIDIA GeForce 8800GT.