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when installing adds-on get following msg "Firefox could not install the file at http://releases.mozilla.org/pub/mozilla.org/addons/3006/downloadhelper-4.7.4-fx+sm.xpi because: Unexpected installation error Review the Error Console log for more details

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Get following error when installing adds-on

"Firefox could not install the file at

http://releases.mozilla.org/pub/mozilla.org/addons/3006/downloadhelper-4.7.4-fx+sm.xpi

because: Unexpected installation error Review the Error Console log for more details. -203"

This happened

Every time Firefox opened

Get following error when installing adds-on "Firefox could not install the file at http://releases.mozilla.org/pub/mozilla.org/addons/3006/downloadhelper-4.7.4-fx+sm.xpi because: Unexpected installation error Review the Error Console log for more details. -203" == This happened == Every time Firefox opened

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See: https://support.mozilla.com/en-US/kb/Unexpected+installation+error+-203+when+installing+add-ons http://kb.mozillazine.org/Unable_to_install_themes_or_extensions_-_Firefox#Unexpected_installation_error_-203


Other Issues: ~~red:You have installed plug-ins with known security issues. You should update them immediately.~~

Install/Update Adobe Flash Player for Firefox (aka Shockwave Flash): your ver. 10.0 r~~red:45~~; current ver. 10.1 r53 (important security update 2010-06-10; see: http://www.adobe.com/support/security/bulletins/apsb10-14.html) ~~red:Check your version here~~: http://www.mozilla.com/en-US/plugincheck/ See: Updating Flash -use Firefox to download and SAVE to your hard drive (save to Desktop for easy access) -exit Firefox (File > Exit) -In Windows, check to see that Firefox is completely closed (Ctrl+Alt+Del, choose Task Manager, click Processes tab, if "firefox.exe" is on the list, right-click "firefox.exe" and choose End process, close the Task Manager window) -In Windows, double-click on the Adobe Flash installer you just downloaded to install/update Adobe Flash -when the Flash installation is complete, start Firefox, and test the Flash installation here: http://kb.adobe.com/selfservice/viewContent.do?externalId=tn_15507&sliceId=1