# CS4 upgrade trashed sync

**URL:** <https://forum.kirupa.com/t/cs4-upgrade-trashed-sync/308039>\
**Category:** flash\
**Created:** [April 15, 2010, 7:11pm UTC](https://forum.kirupa.com/t/cs4-upgrade-trashed-sync/308039 "2010-04-15T19:11:57Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![TomHowe](https://avatars.discourse-cdn.com/v4/letter/t/5fc32e/32.png) [@TomHowe](https://forum.kirupa.com/u/TomHowe)\
**Post date:** [April 15, 2010, 7:11pm UTC](https://forum.kirupa.com/t/cs4-upgrade-trashed-sync/308039/1 "2010-04-15T19:11:57Z")

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Upgraded to Flash CS4 from CS3 last week and now the animation I was working on is out of sync with the sound. Badly. What really creeps me out is the rough cut Shockwave file I made – that worked perfectly on my machine and one other – now runs out of sync too, when I’m not even in the program.

I have sync for the soundtrack set at “start” with the last keyframe set to “stop”.

Anybody with any ideas? You would be a godsend. I’m kind of a newbie, or rather a relearn-Flash-every-two-years-since-who-needs-to-animate-that-often-bie.

Thanks!

Tom