I have been having this same error in my project now for the past week!!! I’m running a Mac Pro Vers 10.6.4 with 2 x 3.2 Ghz Quad-Core Intel and 8Gb DDR2 Ram. FCP 7.0.2 (using Snowleopard)
My project was a HDV project captured and converted to Apple ProRess 422 HQ 1920 x 1080 29.97.
All editing went well and the final project ended at around 92 minutes. My first attempt to export via Share option failed with some error message. Second attempt to export via QTime also failed with error.
The total render estimated time would be around 4-hours and when it comes down to about 14 minutes the error “Out of Memory” would appear…. damn??? It was so frustrating. I kept changing values & settings and pushed thru. Eventually got some output via Compressor but the picture quality sucked!
Eventually called the Mac tech support line today and they gave me the run around first and insisted on Support ID numbers etc. Eventually spoke to someone that suggested that I check my pictures that they are RGB and NOT CMYK. Well, all my photo’s were taken on JPeg and only about 10 used on timeline. I called them back again this time I had an error called “Share Failure” QT Error-50. They could not tell me directly what this was but the guy said there are numerous postings on the internet about the Out of Memory errors and suggest I must check those.
In desperation I nested my entire edit sequence and made a new sequence on the timeline. I then went to export to Quicktime and selected H.264 and gave it the size dimensions of 720 x 486 NTSC and pressed OK. At first time render line started at 3-min then slowly crept up to 7-hours !!! I did think that I was wasting more time on this attempt. However about 4- hours later the render was finished and this time without and error.
I opened the file and it played perfect. I dragged the file into toast and successfully burned my first DVD in almost a week of going between these stupid errors. I hope this might help someone as I felt very helpless knowing I have burned and exported countless files before without having these ERRORS come up. Good Luck !