Version 3.9 Final contains several bug fixes and user interface improvements over the 3.8. Of all the enhancements, the following are the most notable:

1. Less intrusive "Similar threads" feature on the posting interface (use a link to indicate the availability of similar threads on the system);
2. Revised and more relaxed Activation that stores license file directly in the db which will prevent the forum from running into file system permission issues;
3. Refactored code that reduces memory footprint of the forum on the server.

For detailed description on the enhancements, please refer to the release note below: 

Release Note for Version 3.9

Fixes

1. [sp] Remove Rating algorithm error;
2. [both dlls, js] use pagemethod instead of asmx for ASP.NET 4.0 Integrated mode;
3. no subscription notification is sent after moderator / admin finishes editing a post that requires approval;
4. [js] Unable to catch $.ajax server side error;
5. non-default smiley showing up beside the WYSIWYG editor;
6. [sp] increase pgd_session.ip length from 15 to 50 to support IPV6;
7. edit profile interface error when signature is disabled;
8. disable request validation for the AdminCP -> Basic Configuration page;
9. Sitemap page hides the Gallery section if there is no gallery or if gallery is globally disabled;
10. [logic dll] occasionally, line breaks in [code] block get lost;
11. Admin / Moderator cannot edit posts waiting for approval;
12. Album page Sub-Gallery List paging problem;
13. [control dll] If you include in your masterpage an external CSS file (not within the forum directory), an exception occurs;
14. Disapprove and Delete button doesn't work under User Management in the AdminCP;
15. Online User List member name hover Javascript error on IE 8;
16. Update Profile Error occurs if all Avatar options are turned off in the AdminCP;
17. Sidebar member name and new post arrow not shown correctly when the preference is set to display all posts;
18. Search Result Page New Post arrow produces error when the preference is set to display all posts;
19. [logic dll] ReverseHTMLtoPGDCode function additional handling for <br /></p>;
20. PM Read Receipt not working;
21. [js; AdminCP] if avatar dimension wasn't set correctly, IE will see error on the profile editing interface;
22. Problem with entity encoding with the TinyMCE editor;
23. [js, template] Users are unable to edit own messages when the reply permission is taken away;
24. [logic dll, template] Signature distorts display when it is too long;
25. Mobile Theme Posting Error when doing multi-quoting on a non-moible browser;
26.  Quote Message mechanism doesn't work 100% of the time;
27. [template] Login redirects feature not supposed to redirect to login page;
28. [control dll] Pageable Repeater error when pager is shown at top or bottom and data is empty;
29. AdminCP Avatar dimension text box issue when all options are turned off;

Additions

1. [logic dll, sp] Add support for First and Last names in the MemberInfo page level object;
2. [control dll; AdminCP] IE 9 compatibility switch in AdminCP
3. Server checker page shows ASP.NET account name;
4. [control dll; JS] allow forum theme storage to be saved on client;

Changes

1. Code refactoring to reduce memory usage;
2. increase Gallery's Total Photo Size for Member from 99999 KB to 999999 KB;
3. Makes similar threads feature less intrusive;
4. Add "SPAM" to the description of the flagging feature in the AdminCP for consistency;
5. Improved activation
   1. Will not expire once activated;
   2. failed reactivation now revert back to Trial version;
   3. store license file in DB;
6. Provide compatible web.config that supports ASP.NET 4.0;
7. Add a link to show Recent Posts for a member beside the total posts counter on the public profile page;
8. Improved SIP
   
   1. not depending on application cache anymore which improves stability of caller (page on your site);
   2. fix problem regarding [html] code tag formatting;
   3. fix a bug that prevents guest sessions from timing out;
   4. no caller code change required;
   5. tested for ASP.NET 4.0
9. Machine Key generator now uses AES instead of 3DES after MS Security Patch;
10. PGDErrorHandler - remove the explicit error code;
11. Default page auto RSS changed from lastvisit to today's post;
12. tm.aspx redirects automatically when a message ID supplied is for a reply;
13. Server Tests will complete regardless of the result of previous test;

My organization just recently purchase v3.9 and I've installed it with no major problems.  However, when I attempt to register the software using option 1 I get the following error:
An error occured while performing license validation.
Reason: fake URL/machinename or no such orderID.
 
The forms will be strictly internal and as such reside behind our firewall on our intranet.
 
I've followed the installation instructions and have received all the appropriate information from share-it!  I've found the messages relating to problems registering the software and followed the instructions but I still can't register the software.
 
I tried downloading the license.config file again but "no dice".
 
Any ideas what's next?

Hi AoA,
 
I just registered your account as a license holder. You should be able to activate the software now. give it a try in your AdminCP and let me know.

Sam:
 
I used the manual validation section option 1 and now there's nothing there.  It lists the license type as invalid, the licensed URL is encrypted, licensed machine, license expiration and license last validated are all blank.
 
Did I miss doing something?

Sam:
 
I just tried again....
 
I downloaded the Trial license.config and ran the manual validation (option 1) successfully.
 
I'm good to go
 
tx

Sam,
I got same error here, could you please register a license holder for me? I already forwared the purchase email to admin@aspplayground.com.
Thank you.
Ryan

Ryan,
 
Thanks for your purchase and I have just added your account in our V3 license holder group!