I am on a imac, just updated to snow leopard 10.6.8, now InDesign will not open, i am on CS3. Now what do I do?
If you used a Migration assisstant to do the update, you will probably find it best to uninstall all Adobe apps and reinstall from the original disks. Adobe software doesn't do well with migration.
And you might also have to use the Adobe Cleaner to remove all traces of the bad installation: