I have 5 plug-ins that I never use...I need to delete them, but don't know how.
At least check, if the plug-ins need updating - look at the manufacturer's website, if they are compatible with Aperture 3.5 and Mavericks. (see: Aperture 3.4 and later: Some third-party plug-ins are no longer compatible)
To uninstall plug-ins open the folders
(that is the user library in the Library folder in your Home folder)
(that is the in the Library folderat the top level of your MacintoshHD)
Quit Aperture. Remove any "Edit" or "Export" plug-in, that you do no longer need.
Your User Library may still be hidden. Open it from your "Home" folder:
Select the "Home" folder icon in the Finder's sidebar and press the key combination ⌘J to open the view options. Enable "Show Library Folder".
Then open the Home folder and open the Library folder inside and navigate to ~/Library/Application Support/Aperture/Plug-Ins/.
For the second location, the system library on your hard drive, simply open the "Library" folder after clicking and opening the HD icon.
After removing the plug-ins restart the system. Test, if removing the plug-ins will mitigate the problem.
If not, check, if the problem occurs for all your Aperture libraries. Create a new Test library and check, if the problem depends on the library.
but about 30 minutes in everytime i get on Aperture something goes wrong and i have to reboot. It becoming incedibly frustrating especially when i have delines to meet with clients.
Perhaps you are also suffering from the "memory leak" bug.
Check your Activity Monitor occasionally when working with Aperture. Is there a problem with too much RAM being used? See these links:
If that should be the case, do not use any other applications concurrently.