I don't know for sure but I would suspect that perhaps Pinterest changed their code and in the process, broke those extensions. Assuming that's the case, there's really nothing you can do except wait(or report it) for the folks at CoolPreviews/other to update their extensions.

If you have access to another computer you could see if still works properly on it. If it does not, you could probably safely assume the problem is not with your computer.

Have you tried clearing history(especially cache/cookies)?

Have you rebooted? I don't figure that would help but you never know. :)

Hopefully someone will come along with a more helpful answer.



Edited to correct convoluted logic in second paragraph. (changed "does" to "does not") :)

This post was edited by chuggerguy on Fri, Feb 28, 14 at 16:44

Thanks Chuggerguy - sounds plausible, unfortunately. But you bring up another question I have and never asked here. Clearing history is one thing but I always hate to clear cookies because you have to reenter passwords and reset some sites like TV Guide, etc.
If I use CCleaner for example, I don't see where you can exclude those sites and still do any good. Any ideas? Thanks.

No, sorry, I'm sure there are lots of good safe cookie managers but I don't use any of them.

I mostly run Linux and always(?) use Firefox so about the only way I'm familiar with is:

(1) Go into Firefox preferences
(2) Go to the privacy tab
(3) Click "Show Cookies"
(4) Use the search bar to bring up cookies from the domain of interest
(5) Delete away. :)

Thanks Chugger ! Since you're a Firefox guy, Linux user and answer man.....do you have a 'collection' of add-ons or favorites ? There used to be a guy called Apollo's tool box or something. He had a good collection I used to check & found lots of good ones that way but haven't seen his name lately.

Probably not a list that would be useful to anyone else.

But, from Firefox Troubleshooting Information, I'll show you my current list. Notice that some of them are disabled.
Name

Version

Enabled

ID
Adblock Plus
2.5.1
true
"d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d>
customize_titlebar_v2
0.7
true
customize-titlebar-v2@solc.me
Disconnect
3.11.0
true
2.0@disconnect.me
Download YouTube Videos as MP4
1.7.18
true
"b9bfaf1c-a63f-47cd-8b9a-29526ced9060>
Element Hiding Helper for Adblock Plus
1.2.3
true
elemhidehelper@adblockplus.org
Firebug
1.12.6
true
firebug@software.joehewitt.com
Google Search by Image
0.3
true
google@hitachi.com
ReloadEvery
17.0.0
true
"888d99e7-e8b5-46a3-851e-1ec45da1e644>
Show Go! - Updated
1.0.3.2
true
showgo-updated@supernova00
Stylish
1.4.2
true
"46551EC9-40F0-4e47-8E18-8E5CF550CFB8>
UAControl
0.1.3.1
true
uacontrol@qz.tsugumi.org
WOT
20131118
true
"a0d7ccb3-214d-498b-b4aa-0e8fda9a7bf7>
YesScript
1.9.1
true
yesscript@userstyles.org
CacheViewer
0.7.6
false
"71328583-3CA7-4809-B4BA-570A85818FBB>
Clear Cache Button
0.9f
false
"563e4790-7e70-11da-a72b-0800200c9a66>
DownThemAll!
2.0.16
false
"DDC359D1-844A-42a7-9AA1-88A850A938A8>
Ghostery
5.1.1
false
firefox@ghostery.com
Greasemonkey
1.15
false
"e4a8a97b-f2ed-450b-b12d-ee082ba24781>
Ubuntu Firefox Modifications
2.7
false
ubufox@ubuntu.com

I use Ccleaner to clean my computer and it has the option of saving cookies. works great.

I open Ccleaner, click Options, click Cookies and move those I do not want removed over to the right side and they are protected.

I do the same as Owbist. In Options you can keep the cookies you want and it stays that way until you decide to remove them. In other words, you don't have to do that each time you clean. I

Jane