I am reviving this thread because I am still experiencing memory problems with Flexbuilder 3. I gave up on it and switched to FlashDevelop and the Flex SDK I was so frustrated, so I was able to continue my project, but now I am resolved to get this fixed, especially since we now have SEVERAL other employees who purchased Flexbuilder 3 and are experiencing the same problem. These people are new to Flex, are traditionally .NET programmers and so far have not been impressed with Flexbuilder unfortunately due to this error. This seems to be pretty common from the Googling I have done.
When I try and compile large projects, Flexbuilder throws up out or memory errors about Java Heap Space ("An internal memory error occured during: "Launching Venice(1)". Java Heap Space"). (Venice is the name of my Flex 3 project) All the googling I've done, resulted in posts like this one: http://mcquilleninteractive.com/blog/?p=12 which point to making tweaks to either the Flexbuilder.ini file or the Eclipse.ini file. The odd thing is these files are not on my computer ANYWHERE. I have checked the root install directory of Flexbuilder and also searched using Windows XP's file search feature. I had this problem on my last laptop, and my company recently upgraded me to a new laptop. Both laptops have 2GB memory. I did not install Flexbuilder myself, it was pushed to my machine via Tivoli (after we bought a license) which my company uses to manage software. So perhaps it is partially our fault it was not installed right or something, I don't know. Regardless, how can I fix this? I am close to calling Adobe Support, but I thought this list could help before I result to that. Thanks, Jason Merrill Bank of America