Okay, so I'm using the Direwolf 20 modpack 5.0.1 with Optifine version 1.4.7 and it seems to have a lot of texture bugs and game bugs. The textures flash sometimes and it's annoying, but I can deal with it. However, I can't deal with the fact I have trouble using my portal gun when I have it installed. The portals just don't show up so it's like I'm shooting nothing. I've unisnstalled and reinstalled both the modpack and optifine but it has the same bugs when I reinstall. When I remove Optifine, the portal bug is gone and there are no glitchy textures. This doesn't seem to happen to any of the Mindcrack guys or anyone else so I don't know why it's happening to me. I really want to use the Sphax texture pack, but I can't do that w/o Optifine and I love my portal gun so I'm not just going to stop using it. Please help!