Launcher will not allow me to allocate memory

[Darkblock306]

Every time I play Technic or Tekkit the game crashes after a few minutes or as I join a server. I assumed this was a memory problem so I tried to allocate more memory using the launcher. I can't change it to 1536 MB even though it gives me the option. As soon as I click Okay it closes the launcher and when I reopen the launcher it is back at 1 GB. Any suggestions on why it is crashing/why I can't allocate more than 1GB if memory is appreiciated. (No crash report btw its just a white screen until I close it)

[YouDRUNKEN]

Same problem

[Darkblock306]

Okay well half my problem is solved. I had the wrong version of Java. It now gives me options from 512MB to 16GB so I'm good in that respect. However it still won't let me select anything higher than 1GB. It just closes itself and switches back to 1GB when I change it.

EDIT: By the way I'm using 64bit Windows 7 so I don't see why it won't let me use more than 1GB...

[Cheap Shot]

Okay well half my problem is solved. I had the wrong version of Java. It now gives me options from 512MB to 16GB so I'm good in that respect. However it still won't let me select anything higher than 1GB. It just closes itself and switches back to 1GB when I change it.

EDIT: By the way I'm using 64bit Windows 7 so I don't see why it won't let me use more than 1GB...

It will auto limit you if you have either a 32 bit system or 32 bit java. Make double sure that your minecraft isn't using 32 bit JAVA.

[gooseer]

The closing is caused by some update to one of the Technic files, it has nothing to do with what Java someone is using. I run both versions of Java, and it was fine yesterday whilst running at 2gb.

[Zaik]

It will auto limit you if you have either a 32 bit system or 32 bit java. Make double sure that your minecraft isn't using 32 bit JAVA.

I have a Windows 7 64 bit and 64 bit Java(launcher wouldn't run with 32 bit to begin with), This happens to me any time anything is altered in the Options at all. You change whatever it is you're going to change, hit OK, it closes the launcher like normal and...it never comes back.

Then you open it again, and it starts to open and disappears again. Then you open it again and it works fine again, however your ram setting is always set back to 1GB.

[Darkblock306]

I have a Windows 7 64 bit and 64 bit Java(launcher wouldn't run with 32 bit to begin with), This happens to me any time anything is altered in the Options at all. You change whatever it is you're going to change, hit OK, it closes the launcher like normal and...it never comes back.

Then you open it again, and it starts to open and disappears again. Then you open it again and it works fine again, however your ram setting is always set back to 1GB.

Exactly my problem. Hopefully the launcher update will fix it.

EDIT: Yeah the update did fix it. Thanks Technic dudes!

[Zaik]

Yep, fixed for me as well, Thanks for the extremely fast help.