FYI Neither K2 Blackpoint or K2 Blackpearl support SSO, they only support Windows authentication. K2 Connect (SAP) makes use of SSO in some aspects.

If you are trying to use in an SSO environment you will see errors similar to:

Unable to cast object of type ‘System.Web.Security.SingleSignOn.SingleSignOnIdentity’ to type ‘System.Security.Principal.WindowsIdentity’

K2 blackpearl®, K2 blackpoint® and K2 connect® 4.5 Release Candidates now available!

K2 blackpearl, K2 blackpoint and K2 connect have moved into a new era with the introduction of K2 4.5 – the next generation of K2 products!

This release focuses on greater stability and better performance. K2 4.5 still has all the great functionality you’re accustomed to plus great additional features, such as Inline Functions, an updated designer for SharePoint, support for Microsoft Windows Server 2008 R2 and Microsoft Visual Studio 2008, memory and performance enhancements, SSL support, a better installation experience, and more.

K2 blackpearl 4.5 and K2 blackpoint 4.5 are now built from a single codebase, which means that all performance and resource-utilization enhancements will be available to all K2 customers. K2 connect has been updated so that it can leverage these enhancements, as well.

K2 4.5 is the fifth minor installment of K2 blackpearl following RTM, SP1, 0803 and 0807. Because K2 blackpearl and K2 blackpoint are now based on the same core components, we’ve decided to bring the product names into sync.

What’s new in the 4.5 releases of K2 blackpearl and K2 blackpoint
• K2 Designer for SharePoint
• K2 Studio
• Improved design and developer experience
• Enhanced end-user experience
• Optimized infrastructure
• Simplified installation experience

1.New support for:
Windows Server 2008, including R2
SQL Server 2008
Visual Studio 2008

2.Non- AD Installation

3.SSL Support

4.Inline Functions

5.Reports
New filters and parameters
Using SmartObject direct execution functionality

6.Performance enhancements to SmartObjects and the K2 Workflow Server

7.In MOSS/WSS K2 configuration Features are deployed as solutions

8.K2 Designer for SharePoint enhancements include:
Inline Functions
SmartObject Filters
Custom Work Item Notification
Process Data Fields
New Wizards

9.Internationalization of the codebase

10.Numerous documentation updates

11.Inclusion of all Updates

Visit www.k2.com for more information

Go to “Software\Microsoft\Windows\CurrentVersion\App Paths\InfoPath.exe” in your registry (if infopath.exe does not exist create it), there you will see a “Path” value if you do not then create a new string value with the the name “Path” and in the “Value Data” portion add the path to the infopath exe folder, for example, “C:\Program Files (x86)\Microsoft Office\Office12\

Also in the ‘Default’ string add the path with the actual filename ie. “C:\Program Files (x86)\Microsoft Office\Office12\infopath.exe”

Now close K2 designer & reopen, you will now be able to edit Infopath forms from within K2

Well I read numerous posts etc but nothing definitive, after speaking to K2 basically there are ’some’ issues running K2 Blackpoint in a HTTPS environment however full SSL support will be introduced in 4.5 release for both K2 Blackpoint & K2 Blackpearl. A formal release date has not been set but they are looking at the end of Q1 2010.

Hope this helps anybody looking into this & hopefully not long to wait !