Is your copy of CS4 updated?
150:30 means Photoshop CS4's licensing failed.
One way to fix it is to carefully follow the instructions in message #5 of this thread: Error 150:30, Nothing works. Help plz
Or you can reinstall Photoshop CS4 from your discs, then install all updates.
Thanks. It did not work.
Happy New Year
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Then uninstall CS4,
Run the Cleaner Tool
Reinstall You can download a Mac installer here.
This is entirely up to you, but use Disk Utility to verify and repair permissions on your Mac's HDD.