Opticraft crashing when visualizing PSstone

[Freekkiller]

The title should be: Minecraft crashing when visualizing PSstone

I have never had this kind of crash. I don't know if it has anything to do with the PSstone, but fact is that whenever I try to visualize my PSstone, my minecraft crashes. Also, after the crash, when I try to reconnect to any other minecraft server it gives me an error, as shown in the beginning of the video. The crash report: [spoiler]---- Minecraft Crash Report ----
// My bad.

Time: 11-11-12 1:13
Description: Unexpected error

java.lang.ClassCastException: aix cannot be cast to ahz
   at bbq.a(SourceFile:25)
   at bbq.a(SourceFile:10)
   at bby.a(SourceFile:103)
   at bby.a(SourceFile:96)
   at ayy.a(RenderGlobal.java:485)
   at ayt.a(EntityRenderer.java:1569)
   at ayt.b(EntityRenderer.java:1118)
   at net.minecraft.client.Minecraft.J(SourceFile:604)
   at net.minecraft.client.Minecraft.run(SourceFile:534)
   at java.lang.Thread.run(Unknown Source)

Relevant Details:
- Minecraft Version: 1.4.2
- Operating System: Windows 7 (x86) version 6.1
- Java Version: 1.7.0_09, Oracle Corporation
- Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
- Memory: 434580208 bytes (414 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- AABB Pool Size: 823 (46088 bytes; 0 MB) allocated, 817 (45752 bytes; 0 MB) used
- LWJGL: 2.4.2
- OpenGL: GeForce GTX 550 Ti/PCI/SSE2 GL version 4.1.0, NVIDIA Corporation
- Is Modded: Very likely
- Type: Client
- Texture Pack: faithful32pack.zip
- Profiler Position: N/A (disabled)
- Vec3 Pool Size: 847 (47432 bytes; 0 MB) allocated, 514 (28784 bytes; 0 MB) used
- World MpServer Entities: 46 total; [axc['freekkiller'/8942466, l='MpServer', x=-2680,54, y=30,62, z=3036,32], qi['arrow'/8940385, l='MpServer', x=-2681,43, y=35,05, z=3037,34], qi['arrow'/8940384, l='MpServer', x=-2681,46, y=35,05, z=3037,31], qi['arrow'/8940372, l='MpServer', x=-2681,40, y=41,05, z=3037,47], qi['arrow'/8940373, l='MpServer', x=-2681,06, y=41,05, z=3036,78], qi['arrow'/8940374, l='MpServer', x=-2681,37, y=41,05, z=3037,59], qi['arrow'/8940375, l='MpServer', x=-2680,84, y=41,05, z=3036,65], pg['item.item.string'/8940368, l='MpServer', x=-2682,13, y=36,13, z=3038,13], pk['Cave Spider'/8940369, l='MpServer', x=-2683,38, y=35,31, z=3037,65], pk['Cave Spider'/8940370, l='MpServer', x=-2683,38, y=35,00, z=3037,20], pg['item.item.spiderEye'/8940371, l='MpServer', x=-2679,13, y=43,13, z=3035,50], qi['arrow'/8940380, l='MpServer', x=-2681,28, y=35,05, z=3037,84], pg['item.item.arrow'/8940381, l='MpServer', x=-2680,13, y=30,13, z=3038,31], pg['item.item.bone'/8940382, l='MpServer', x=-2680,09, y=34,13, z=3038,56], pg['item.item.arrow'/8940383, l='MpServer', x=-2680,41, y=34,13, z=3037,13], qi['arrow'/8940376, l='MpServer', x=-2680,81, y=41,05, z=3036,69], qi['arrow'/8940377, l='MpServer', x=-2680,72, y=35,05, z=3038,25], qi['arrow'/8940378, l='MpServer', x=-2681,22, y=35,05, z=3037,66], qi['arrow'/8940379, l='MpServer', x=-2681,75, y=35,05, z=3037,38], pg['item.item.arrow'/8940366, l='MpServer', x=-2680,53, y=34,13, z=3037,13], oj['Cow'/8939591, l='MpServer', x=-2695,78, y=60,00, z=3047,78], oj['Cow'/8939590, l='MpServer', x=-2700,31, y=60,00, z=3048,75], oj['Cow'/8939589, l='MpServer', x=-2697,78, y=60,00, z=3043,91], oj['Cow'/8939588, l='MpServer', x=-2697,31, y=60,00, z=3048,50], pk['Cave Spider'/8939506, l='MpServer', x=-2691,38, y=36,67, z=3037,91], pk['Cave Spider'/8939505, l='MpServer', x=-2691,38, y=35,53, z=3033,97], qi['arrow'/8943053, l='MpServer', x=-2679,63, y=35,05, z=3038,22], pk['Cave Spider'/8939507, l='MpServer', x=-2691,38, y=38,33, z=3032,65], on['Pig'/8942709, l='MpServer', x=-2742,84, y=68,00, z=2990,53], on['Pig'/8939354, l='MpServer', x=-2686,31, y=67,00, z=3058,53], pw['Skeleton'/8942714, l='MpServer', x=-2680,19, y=34,00, z=3037,69], oj['Cow'/8942726, l='MpServer', x=-2657,93, y=67,00, z=3091,60], qi['arrow'/8943331, l='MpServer', x=-2680,28, y=35,05, z=3038,72], qi['arrow'/8943628, l='MpServer', x=-2680,22, y=35,05, z=3038,66], qi['arrow'/8943927, l='MpServer', x=-2680,28, y=35,05, z=3038,66], qi['arrow'/8944097, l='MpServer', x=-2680,56, y=41,05, z=3038,56], qi['arrow'/8944248, l='MpServer', x=-2680,00, y=35,22, z=3038,50], qi['arrow'/8944417, l='MpServer', x=-2680,62, y=35,05, z=3038,66], qi['arrow'/8944594, l='MpServer', x=-2680,00, y=35,22, z=3038,50], qi['arrow'/8944806, l='MpServer', x=-2680,47, y=35,05, z=3038,75], qi['arrow'/8945098, l='MpServer', x=-2681,37, y=35,05, z=3038,65], pk['Cave Spider'/8945228, l='MpServer', x=-2697,25, y=31,00, z=3027,61], pk['Cave Spider'/8945229, l='MpServer', x=-2691,38, y=35,71, z=3031,22], pg['item.item.arrow'/8945430, l='MpServer', x=-2679,76, y=35,13, z=3038,33], pg['item.item.bone'/8945431, l='MpServer', x=-2681,51, y=30,63, z=3037,88], pw['Skeleton'/8939355, l='MpServer', x=-2685,19, y=37,47, z=3017,56]]
- World MpServer Players: 1 total; [axc['freekkiller'/8942466, l='MpServer', x=-2680,54, y=30,62, z=3036,32]]
- World MpServer Chunk Stats: MultiplayerChunkCache: 169
- Forced Entities: 56 total; [axc['freekkiller'/8942466, l='MpServer', x=-2680,54, y=30,62, z=3036,32], qi['arrow'/8944806, l='MpServer', x=-2680,47, y=35,05, z=3038,75], oj['Cow'/8939591, l='MpServer', x=-2695,78, y=60,00, z=3047,78], oj['Cow'/8939590, l='MpServer', x=-2700,31, y=60,00, z=3048,75], oj['Cow'/8939589, l='MpServer', x=-2697,78, y=60,00, z=3043,91], oj['Cow'/8939588, l='MpServer', x=-2697,31, y=60,00, z=3048,50], pg['item.item.bone'/8945431, l='MpServer', x=-2681,51, y=30,63, z=3037,88], qi['arrow'/8944594, l='MpServer', x=-2680,00, y=35,22, z=3038,50], pg['item.item.arrow'/8945430, l='MpServer', x=-2679,76, y=35,13, z=3038,33], qi['arrow'/8940385, l='MpServer', x=-2681,43, y=35,05, z=3037,34], qi['arrow'/8940384, l='MpServer', x=-2681,46, y=35,05, z=3037,31], qi['arrow'/8944097, l='MpServer', x=-2680,56, y=41,05, z=3038,56], qi['arrow'/8940372, l='MpServer', x=-2681,40, y=41,05, z=3037,47], qi['arrow'/8940373, l='MpServer', x=-2681,06, y=41,05, z=3036,78], qi['arrow'/8940374, l='MpServer', x=-2681,37, y=41,05, z=3037,59], qi['arrow'/8940375, l='MpServer', x=-2680,84, y=41,05, z=3036,65], pg['item.item.string'/8940368, l='MpServer', x=-2682,13, y=36,13, z=3038,13], pk['Cave Spider'/8940369, l='MpServer', x=-2683,38, y=35,31, z=3037,65], pk['Cave Spider'/8940370, l='MpServer', x=-2683,38, y=35,00, z=3037,20], pg['item.item.spiderEye'/8940371, l='MpServer', x=-2679,13, y=43,13, z=3035,50], qi['arrow'/8940380, l='MpServer', x=-2681,28, y=35,05, z=3037,84], pg['item.item.arrow'/8940381, l='MpServer', x=-2680,13, y=30,13, z=3038,31], pg['item.item.bone'/8940382, l='MpServer', x=-2680,09, y=34,13, z=3038,56], pg['item.item.arrow'/8940383, l='MpServer', x=-2680,41, y=34,13, z=3037,13], qi['arrow'/8940376, l='MpServer', x=-2680,81, y=41,05, z=3036,69], qi['arrow'/8940377, l='MpServer', x=-2680,72, y=35,05, z=3038,25], pg['item.item.spiderEye'/8940371, l='MpServer', x=-2679,13, y=43,13, z=3035,50], qi['arrow'/8940378, l='MpServer', x=-2681,22, y=35,05, z=3037,66], pg['item.item.string'/8940368, l='MpServer', x=-2682,13, y=36,13, z=3038,13], qi['arrow'/8940379, l='MpServer', x=-2681,75, y=35,05, z=3037,38], pg['item.item.arrow'/8940383, l='MpServer', x=-2680,41, y=34,13, z=3037,13], pg['item.item.bone'/8940382, l='MpServer', x=-2680,09, y=34,13, z=3038,56], oj['Cow'/8942726, l='MpServer', x=-2657,93, y=67,00, z=3091,60], pg['item.item.arrow'/8940381, l='MpServer', x=-2680,13, y=30,13, z=3038,31], pg['item.item.arrow'/8940366, l='MpServer', x=-2680,53, y=34,13, z=3037,13], pg['item.item.string'/8940367, l='MpServer', x=-2680,63, y=34,13, z=3037,13], pg['item.item.arrow'/8940366, l='MpServer', x=-2680,53, y=34,13, z=3037,13], qi['arrow'/8944248, l='MpServer', x=-2680,00, y=35,22, z=3038,50], qi['arrow'/8943927, l='MpServer', x=-2680,28, y=35,05, z=3038,66], pk['Cave Spider'/8945228, l='MpServer', x=-2697,25, y=31,00, z=3027,61], pk['Cave Spider'/8945229, l='MpServer', x=-2691,38, y=35,71, z=3031,22], pw['Skeleton'/8942714, l='MpServer', x=-2680,19, y=34,00, z=3037,69], on['Pig'/8942709, l='MpServer', x=-2742,84, y=68,00, z=2990,53], pg['item.item.arrow'/8945430, l='MpServer', x=-2679,76, y=35,13, z=3038,33], pg['item.item.bone'/8945431, l='MpServer', x=-2681,51, y=30,63, z=3037,88], pk['Cave Spider'/8939507, l='MpServer', x=-2691,38, y=38,33, z=3032,65], pk['Cave Spider'/8939506, l='MpServer', x=-2691,38, y=36,67, z=3037,91], pk['Cave Spider'/8939505, l='MpServer', x=-2691,38, y=35,53, z=3033,97], pg['item.item.arrow'/8945461, l='MpServer', x=-2680,49, y=35,29, z=3037,73], qi['arrow'/8943628, l='MpServer', x=-2680,22, y=35,05, z=3038,66], qi['arrow'/8943053, l='MpServer', x=-2679,63, y=35,05, z=3038,22], qi['arrow'/8944417, l='MpServer', x=-2680,62, y=35,05, z=3038,66], on['Pig'/8939354, l='MpServer', x=-2686,31, y=67,00, z=3058,53], qi['arrow'/8943331, l='MpServer', x=-2680,28, y=35,05, z=3038,72], pw['Skeleton'/8939355, l='MpServer', x=-2685,19, y=37,47, z=3017,56], qi['arrow'/8945098, l='MpServer', x=-2681,37, y=35,05, z=3038,65]]
- Retry Entities: 0 total; [][/spoiler]

Again, I never have this crash. I ONLY and I mean ONLY have it when I try to visualize my PSstone

Video:
http://www.youtube.com/watch?v=Bf7GvKMfv40&feature=youtu.be

As seen in the report, my texture pack was faithful and I had 1 installed mod which was optifine

[FNVcourierjon(SigilStone)]

This has happened to me, only when my virtual memory would run low.  It has stopped so far.

[DeeKay]

Indeed, since so many glass blocks are being 'placed' at once, clients have been prone to crashing.
The only way I've been able to fix it, is just by waiting a couple of hours and trying again.

[Qu1cks1lva]

I've had this in the past with larger fields e.g. diamond PS

I found adjusting the position of the PS slightly resolved the problem

^_^