128x128 usage errors

[Towerbox12]

I am able to use the 64 version of sphax but not the 128 version, and i have the maximum amount of RAM allocated, and am able to access all files in the folder normally, so i am not using a corrupted file. I am using magic launcher for optifine and 2 other mods. This is 1.6.2. Please help. Whenever i attempt to switch to 128 it simply returns to the default tp. Also, I have been able to use this setup in the past, but not now, so my ability to use the pack is not an issue. I am using no mod textures.

[Sphax]

How much RAM do you have? And how much do you have allocated to JAVA?

[HanFox]

It returns to default because you don't have enough RAM given to Minecraft, as Sphax hinted at above.

If you can't allocate any more than you currently do you won't be able to use 128x.

[MrSmartyPants]

im having the same issue, i have 4GB of ram and 3gb allocated to JAVA