FSCommand handlers stopped working with Flash 19

Hi,

My existing SWFs are no longer handling click events as of flash 19 (if I uninstall v19 and install v18, they work again). The SWFs display fine  - it's just the FSCommand handlers stopped functioning.

With debug flash 19, I see errors like this in the error log when clicking buttons/links in my SWF:

    *** Security Sandbox Violation ***

    FSCommand halted (AllowScriptAccess is 'always'): FSCommand:OnItemSelected

With AllowScriptAccess=always, I thought there was no condition where FSCommand would be blocked. Any tips on what would cause this?

Thanks!

Jake