Modpack not working

[mrbuddy123]

So I just refreshed my computer from all of the viruses I had and I started up technic. I downloaded my favorite modpack: Cataclysm. I Click play and then it loads. It wont let me play or maximize it. Is it because it will only let me have 1 GB worth? Ive tried all I can. PLease help! D:

[plowmanplow]

This post probably belongs in Platform Pagoda.

 

1. Make sure you have the latest Java 7 (not 8) 64bit for your OS. Having 64bit Java is the only way to set more than 1G of allocated RAM in the client.
2. Once you have 64bit Java 7 installed you can increase your memory allocation. Don't go above 3G or 50% of your system RAM, whichever is lowest.

[Munaus]

moved