As a longtime symfony user i think the biggest mistake here was to not upgrade to 1.4..Even now the effort to upgrade to 1.4 should be worth it had a lot longer

As a longtime symfony user i think the biggest mistake here was to not upgrade to 1.4..Even now the effort to upgrade to 1.4 should be worth it had a lot longer lifecycle, more documentation and alot more people are still using it. I also believe the effort should be fairly small compared to rewriting it using Symfony 2.x. I am currently working on a huge Symfony2 project and we update to the next version asap to avoid these kinds of problems. Its kind of like merging a branch. If you merge master into your feature branch every day and take the time to fix conflicts one by one it will be easy to merge back into master. If you dont, and develop for weeks/months on your own it will be alot of work to merge back.