Enable Plug-ins check box never stays checked.

Often, when I open and use Safari, the Enable Plug-ins check box is unchecked (Preferences>Security>Web Content>Enable Plug-ins). I am so used to this happening that I normally go into preferences and check this box before surfing. Is there any way to keep this check box permanently checked?
Thanks,
Lou

It's not an age thing.
You and I remember "older" methods, is all.
The Property List Editor (Developer tools) can inspect and edit a .plist file. The .plist (Property List get it?) method replaces older .prefs file format found in OS 9.
Since every app has a "start list" of preferences (default settings) each user can do different things with different apps. They hold everything from the size of a window, the fonts used, the playback settings, etc. and sometimes go "wonky".
Since a new set (.plist file) will be made when you delete an older version it's creation sets things back to "default".

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Open System Preferences > Flash Player then select the Advanced tab.
Click Delete All under Browsing Data and Settings
Not empty the Safari cache.
From your Safari menu bar click Safari > Preferences then select the Advanced tab.
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Excellent - good work!
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Can you check to see if you have "enable plug-ins" checked in Safari's preferences dialog, under the security tab? If not, enable it and check.
It seems to be a browser specific issue. Try a different browser like chrome or firefox, check if it works there.

Plug-ins are up to date, but Firefox plug-in checker shows them as out of date.

The plug-ins checker shows Flash to be out-of-date, but Adobe's plug-in checker shows that I am up-to-date. Also Firefox's about:plugins page shows that my Flash is the correct version. I have erased the pluginreg.dat file and it did not solve the problem. Any other suggestions or is this your plug-ins checker again?

Your installed Flash 11.3.300.257 version is the latest available for Mac, so that is OK.
There only has been released a Flash 113.300.262 update for the Windows platform.<br />
So it looks that the plugin check page doesn't take your platform into account.
*http://www.adobe.com/special/products/flashplayer/fp_distribution3.html

Updating Flash Player Does Not Reflect In Add-Ons Manager or Plug-In Check

The add-ons Manager shows I have Flashplayer version 11.3.300.265. The Plug-ins Check shows there is an update, and I downloaded and installed Flash Player version 11.3.300.268. Six times! Each time, the installation shows as successful on the Adobe site, but FF14 does not reflect the new version, and the Plug-in check continues to insist that the version is out of date.
I had no problems whatsoever updating to the latest Flashplayer version in IE (8). But FF is once again giving me trouble with this.
In addition, the add-ons manager shows a version of Flash 9.0.45.0, last updated Feb 20, 2007. There's a big red warning that it's out of date. This is in addition to Shockwave Flash (the correct one) and Shockwave for Director (which is current). It's been like this for awhile, and I disabled the antique version of Flash and it does not affect FF or Flashplayer performance.
I tried deleting my plug-ins database, but I just get all the same info when it is rebuilt. Any suggestions or solutions would be appreciated.

Such old version are usually located in the plugins folder in the Firefox program folder (C:\Program Files\Mozilla Firefox\).
You can enable the plugin and verify the path on the about:plugins page.
You can set the plugin.expose_full_path pref to true on the about:config page to see the full path of plugins on the about:plugins page.
*http://kb.mozillazine.org/Issues_related_to_plugins#Identifying_installed_plugins
*http://kb.mozillazine.org/about:plugins
*http://kb.mozillazine.org/about:config
It is best not to leave that pref set to true as it exposes that full path to web servers, so reset that pref to false after you are done with the about:plugins page.
See "Manually uninstalling a plugin":
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Java 7U55 is still secure (i.e. no known security vulnerabilities), so if there aren't any issues with Java 7U51 then there is no need to update to Java 8 at this moment and you can wait til Java 8 becomes available via the automatic Java updater or via the java.com website.
*http://www.java.com/en/download/faq/java8.xml
See Java Platform > Java SE (JRE Download;32 bit for Windows)
*http://www.oracle.com/technetwork/java/javase/downloads/index.html
*http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html

Safari Blocked Plug-ins - Still!

I have tried multipal times to download the latest "adobe flash player", and nothing seems to work. Clicking on the tab downloads the latest, but it doesn't help. How do I intergrate this upgrade into Safari?
I cannot understand why this should be so difficult to do on my iMac.
Connie2077

If you're sure you've installed the latest version of Flash, take each of the following steps that you haven't already tried. After each step, relaunch Safari and test. For a "missing plug-in" error, start with Step 4.
1. If you're getting a "blocked plug-in" error, then from the menu bar select
 ▹ System Preferences… ▹ Flash Player ▹ Advanced
and click Check Now. Quit and relaunch your browser.
2. Triple-click the line below to select it:
/Library/Internet Plug-Ins
Right-click or control-click the highlighted text and select
Services ▹ Open
from the contextual menu. A folder should open. Delete the following item, or anything with a similar name, if present:
Flash Player (failing).plugin
You may be prompted for your login password.
3. Re-download and reinstall Flash. Download it from this page:
Adobe - Install Adobe Flash Player
Never download a Flash update from anywhere else.
4. If you get a "missing plug-in" error, select
Safari ▹ Preferences... ▹ Security
from the Safari menu bar and check the box marked Enable plug-ins.
5. Select
Safari ▹ Preferences... ▹ Extensions
from the Safari menu bar. If any extensions are installed, disable them.
6. In the Safari preference window, select
Privacy ▹ Remove All Website Data
Close the window. Then select
 ▹ System Preferences… ▹ Flash Player ▹ Advanced
and click Delete All. Close the preference pane.

Enable Plug-ins check box never stays checked.

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