I think I have Flash Builder Beta 1 (is build 235740 FB B1?) and I keep getting "Licensing for this product has expired" error as I try to start my Eclipse+Flash Builder. I have Flash Builder Beta 2 serial numbers but I can't seem to find where to enter these. So my question is can I keep using Beta1 with Beta2 serial numbers? If so, where do I enter the serial number? If not, does this mean that I have to uninstall Beta1 and install Beta2?
Beta 1 will no longer work so you need to install beta2, beta 2 uses a much more current version of the flex 4 sdk as well so you may find some of your code requires modification. The beta 2 requires a different serial number to beta 1 so just make sure that it is a beta 2 serial number that you have.