I found this answer on another forum and it helped me so I thought I’d post it here for anyone with that issue:
exporterquicktimehost.bundle and adobe premiere cs6
After installing Adobe Master Collection CS6 on a workstation, Adobe Premiere CS6 stalls when loading ExporterQuicktimeHost.bundle. Did the following as a “quickfix” to bypass this problem:
1. Go to Applications
2. Go to Adobe Premiere CS6
3. Right click on the application and click on “Show Package Contents”
4. Go to Contents –> Plug-ins –> Common
5. Move the following files to the desktop: ExporterQuicktimeHost.bundle and ImporterQuicktimeHost.bundle
6. Restart Adobe Premiere CS6 and it will successfully open up