Halp plox
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Teh_Chicken
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Error occured during initialization of UM
Could not reserve enough space for object heap

ERROR: Failed to run minecraft.

Halp?
Running on Vista.

InvisiblePerson
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RAM problem.

I recently began to have this problem because of my RAM usage. It can be easily solved by going into the run.bat and finding "-Xms800M -Xmx800M" and changing both 800s to something. 800 MB RAM was a bit too much for my small laptop, so I changed it to -Xms700M -Xmx700M. Works perfectly now.

Teh_Chicken
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Even when I change them to as

Even when I change them to as little as 500mb , It just halts at "Starting java from "etc""

InvisiblePerson
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Ah.

Then under the run.bat, the second or third line that says java="auto", change that to your java.exe. I had 2, so had to state my latest one.

Teh_Chicken
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Excellent.

Thanks, fixd it.