guests dont have access to your site… even if they did, they wouldnt be able to upload…

It will still come down to a js conflict usually…  generally speaking its working fine on IE for 99% of the users…

interestingly, you are loading a small number of plugins – just view the page source… and oddly, bbpress css…

you are also serving cached pages… from the footer:

<!– Performance optimized by W3 Total Cache. Learn more: http://www.w3-edge.com/wordpress-plugins/

Page Caching using apc (Requested URI is rejected)
Database Caching 23/31 queries in 0.022 seconds using apc
Object Caching 750/753 objects using apc

Served from: www.seriouslyfish.com @ 2012-10-10 14:04:40 –>

you cannot cache the forum…  so you must disable caching for all types of w3 caching in use on the forum page… see all forum content is displayed on a single wp page.. so caching plugins get it wrong for the forum…

once those are resolved, if still having issue, try a temp switch to the default wp theme…  just trying to locate the conflict…

Mr Papa said
guests dont have access to your site… even if they did, they wouldnt be able to upload…

It will still come down to a js conflict usually…  generally speaking its working fine on IE for 99% of the users…

interestingly, you are loading a small number of plugins – just view the page source… and oddly, bbpress css…

you are also serving cached pages… from the footer:

<!– Performance optimized by W3 Total Cache. Learn more: http://www.w3-edge.com/wordpress-plugins/

Page Caching using apc (Requested URI is rejected)
Database Caching 23/31 queries in 0.022 seconds using apc
Object Caching 750/753 objects using apc

Served from: www.seriouslyfish.com @ 2012-10-10 14:04:40 –>

you cannot cache the forum…  so you must disable caching for all types of w3 caching in use on the forum page… see all forum content is displayed on a single wp page.. so caching plugins get it wrong for the forum…

once those are resolved, if still having issue, try a temp switch to the default wp theme…  just trying to locate the conflict…

indeed but it’s free to register…

/forums/ is on my page-caching rejection list, hence the “requested URI is rejected” (compare to homepage). the forum didn’t work at all when caching was enabled on it.

if it’s a js conflict, why doesn’t the same problem occur in ff/chrome?

removing the js files one by one to determine where the problem is will require plugins to be de-activated which as I stated in OP is going to be basically impossible for us

each browser includes their own proprietary js engine…  so you can get different results in different browsers… just like each browser chooses how to interpret css and IE runs into so many problems for not following standards…

but the caching engine is still serving other forms of caching, ie db… did you tell it to ignore on each type of caching in use…

in one of other couple threads on IE js issues, you will find a plugin that allows you to selectively disable loading of stuff individually on each page… of course, this assumes you know whether the theme/plugin is just foolishly loading its stuff everywhere instead of just where its needed…

hard to help if we cant narrow down the problem…

Mr Papa said
in one of other couple threads on IE js issues, you will find a plugin that allows you to selectively disable loading of stuff individually on each page… of course, this assumes you know whether the theme/plugin is just foolishly loading its stuff everywhere instead of just where its needed…

do you have a link to said thread?

https://simple-press.com/support-forum/sp5-plugin-topics/tinymce-not-available-in-ie9/page-8/#p113681

I have the same issue with the Ad file button, in firefox and IE, chrome works well. I have disabled all plugins, in simple press and in WP. issue persists. I installed the plugin optimizer to control the autoloads, just wondering there had been any progress on your end?

as of now, no progress to be made…  only a few instances of this… granted, would like zero, but IE is notoriously famous for not following standards…

can you provide any more info, such as a link?  does it occur with default wp theme?

I am using the default theme, site is still in production and not published yet.

http://goo.gl/qd4uX

interesting also, when I first log in to the forum (first session with IE ) the first try the button works. but once I post, it no longer works.

issue has same behavior with:

IE 8, 9

if I enable compatibility view in IE, it seems to work.

Now Rich editor (TinyM) while in compatibility view does not work.  thanks IE  

I notice this on your page

<!–

Options Optimizer:
54 queries in 0.410 seconds.
Memory Usage Current: 6,041,092, Peak: 6,344,936

–>

are you using a caching plugin?

I dont see a lot of plugins loaded – at least not that use js…  are there any?  when you had the default wp theme running, did you disable any other plugins too just to remove from equation?

btw, you have some incredibly huge image files there – takes quite some time load up multi megabyte images…

I dont get any errors with IE on your site, but of course as guest I cannot post…

the image files will be removed. they were used to test size limits and restrictions.  you can register, if you wish to test a post and attachement. I am not using a caching plugin. I disabled all plugins except for simple press.

Can I provide any other information to help perhaps resolve this?

not sure what to resolve yet…  still trying to understand what is going on…  99% of our installs work just fine in IE…

you did not answer my question about caching plugins and the optimizer code displayed…

did you disable other plugins to see if still have a conflict?  need to narrow it down…  remember tinymce is 3rd party code used by wp and us from moxie – we dont write that code…  but do want to resolve this…