Hit Or Miss Mac Flash Player

Question

I have wasted an inordinate amount of time trying to find a solution for this...
I'm working on an Intel iMac, Mac OSX v.10.5.8, browsers Safari 4.0.5 (5531.22.7) and Firefox v.3.6.3. I've carefully uninstalled and reinstalled the latest Mac version of both the Flash and Shockwave players with the recommended Adobe installers and uninstallers, repaired permissions, rebooted, etc.
The odd part of my mystery is that before this most recent Flash update installation, I never had a problem at ANY site.
Now, videos play as expected at some sites, like http://youtube.com , but not at all at other sites, like http://vids.myspace.com/
Perhaps a related new development is that when I enter the fullscreen mode at youtube, the gray-bordered "Pres Esc to exit full screen mode" alert stays fixed in the middle of the screen... very distracting.
In some cases, I see a blank pop-up screen (whether or not "Block Pop-Up Windows" is selected in Safari's menu) or, as is the case at http://vids.myspace.com — a blank screen with a circular light-gray *snake* chasing its tail clockwise. (I'm beginning to feel much the same trying to remedy this problem.)
If I CONTROL-click on the blanks for the "Settings" I see the Settings Manager, but it is entirely non-functional. When I try to make changes suggested in the Forums on the Adobe site's representation of that Settings Manager –
http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_man ager03.html  I can move the slider value from a "setting other than zero," but the "Allow third-party Flash content to store data on your computer" checkbox cannot be enabled.
I installed the recommended flash debugger and got this result from a *no-show* video's pop-up blank:
Error: Error #2134: Cannot create SharedObject.
at flash.net::SharedObject$/getLocal()
at com.jeroenwijering.utils::Configger/loadCookies()
at com.jeroenwijering.utils::Configger/load()
at com.jeroenwijering.player::Player/loadConfig()
A knowledgeable website guru/friend suggested this might indicate a conflict with an earlier flash version, but a thorough search and examination reveals no previous versions lurking anywhere.
The one remaining item I've removed is the Flash Player folder – user/library/caches/Adobe/Flash Player — which had some items dating back to 2009. It didn't help. Other than that, I'm at a loss to fix this problem.
Any suggestions?
Thanx. 

Answer 1

Re: Re-installed debugger reports...
Here's what a visit to the same website detailed in my original post reports in the debugger dialog box:
Error: Error #2134: Cannot create SharedObject.
at flash.net::SharedObject$/getLocal()
at com.jeroenwijering.utils::Configger/loadCookies()
at com.jeroenwijering.utils::Configger/load()
at com.jeroenwijering.player::Player/loadConfig()
myspace.com problem:
http://vids.myspace.com/index.cfm?fuseaction=vids.individual&videoid=5704280
Error: Error #2134: Cannot create SharedObject.
at flash.net::SharedObject$/getLocal()
at com.FIM.utils::LocalData()
at com.FIM.utils::LocalData$/getInstance()
at com.FIM.media.types::VideoContainer/_init()
at com.FIM.media.types::VideoContainer()
at com.FIM.factory::MediaContainerFactory/getMediaContainer()
at com.FIM::MediaPlayer/init()
at Application/allLoaded()
at Application/checkAllLoaded()
at Application/onLanguageLoaded()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at com.FIM.services.media::VideoService/onGetLocalizedStringsResult()
at com.FIM.utils::NetUtils$/executeCallbacks()
at com.FIM.utils::NetUtils$/resultCallback()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at flash.net::URLLoader/onComplete()
dailymotion.com problem:
http://www.dailymotion.com/video/xejgt7_how-to-use-drop-io-to-share-and-rev_tech#hp-v-v14
Error: Error #2134: Cannot create SharedObject.
at flash.net::SharedObject$/getLocal()
at com.dm::Player/connectSharedObject()
at com.dm::Player/addedToStageHandler()
metacafe.com problem:
http://www.metacafe.com/watch/5108290/training_camp_party_scott_fujita/
Error: Error #2134: Cannot create SharedObject.
at flash.net::SharedObject$/getLocal()
at com.metacafe.video::VideoController/setModel()
at com.metacafe.mvc::Controller()
at com.metacafe.video::VideoController()
at com.metacafe.video::VideoPlayer/init()
at com.metacafe.video::VideoPlayer/onAddedToStage()
at flash.display::DisplayObjectContainer/addChild()
at com.metacafe.base::CommonVideoPlayer/initVideoPlayer()
at com.metacafe.base::CommonVideoPlayer/init()
at com.metacafe.portal::PortalVideoPlayerBase/init()
at com.metacafe.portal::Player/init()
at com.metacafe.portal::Initializer/init()
at com.metacafe.portal::Initializer()
(Clicked *Continue* button on debugger dialog box and got this:)
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at com.metacafe.video::VideoPlayer/set allowSeekAhead()
at com.metacafe.base::CommonVideoPlayer/initVideoPlayer()
at com.metacafe.base::CommonVideoPlayer/init()
at com.metacafe.portal::PortalVideoPlayerBase/init()
at com.metacafe.portal::Player/init()
at com.metacafe.portal::Initializer/init()
at com.metacafe.portal::Initializer()
yahoo!Video.com problem:
http://video.yahoo.com/
"Snake Chasing Its Tail"... but no debugger dialog.