Hello, Could be many things, we should start with this. 'Try Disk Utility 1.

Insert the Mac OS X Install disc, then restart the computer while holding the C key. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.).Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility. 3. Click the First Aid tab.

Select your Mac OS X volume. Click Repair Disk, (not Repair Permissions). Disk Utility checks and repairs the disk.' Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in ApplicationsUtilities, then highlight your drive, click on Repair Permissions, reboot when it completes.

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(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive & clear caches.) If perchance you can't find your install Disc, at least try it from the Safe Boot part onward. I tried the Safe Boot part onward, Repair permissions, no change, still get same Application Error for Java. Checking the Windows Activity, found a line '. /ultracam.class' not found. The Java Console text shows the following line three times 'network: Cache entry not found , version:null'. The first time resulted in 'security: Found a valid trusted site record for. ', the second time ended with ' security: jpicertstore.cert.getkeystore', the third time the exception error appeared.

The text is over six pages long. These are for Trendnet Pan/Tilt security cameras TVIP410W, located at multiple remote sites thousands of miles apart. All these cameras were working correctly until the recent Java Update 17. These sites are listed under Java Preferences ' Signed content from these sites runs without prompting'.

Trendnet has a recent security firmware update, (dated 10/10/13), but the update is strongly recommended only with a hard wired ethernet connection. Since I won't get to these sites for a couple months, I upgrade to OS X Mavericks. I get a Security Warning when accessing the cameras, but it allows for an option to accept the risk and run the application.

Problem temporally solved until the camera's firmware can be undated. Apple Footer. This site contains user submitted content, comments and opinions and is for informational purposes only. Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums.

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