Our patches include the fixes and enhancements from the previous patch as well, so you can simply install the latest patch to update your software.
 
You do have to make sure that the update patch can be applied to the version you have currently installed; i.e. the major version number needs to be the same.

Beginning with version 10 Multiframe will now install and run correctly on 64-bit versions of Windows
 
Versions of Multiframe prior to 10 do not support 64-bit Windows.

Multiframe is no longer developed or supported running under the Macintosh OS 9 or OS X. However, with Apple's announcement of Macintosh computers based on Intel processors, it is now possible to run the latest Windows versions of our software natively on a Macintosh.
 
While it has always been possible to use Virtual PC to run Windows programs on a Macintosh, this is generally relatively slow and can have occasional compatibility problems. It is in fact not officially supported by us as we are unable to test this configuration sufficiently well.
 
The new Intel-based Macs allow you to use a tool called Boot Camp to install and run Windows on your Macintosh, alongside your Macintosh OS. While it doesn't provide the live switching between the two that VirtualPC does, (it requires a reboot to switch) it does give you very fast Windows performance on the same machine you use from day to day. More details on Boot Camp can be found on Apple's web site.
 
A third party also has a product named Parallels Desktop that offers a similar switching between OS X and Windows but without re-booting. Info on that can be found at www.parallels.com. We have not had an opportunity to test Parallel's compatibility with our software.
 
If you would like to cross-grade your Macintosh versions to Windows, please contact us for a quotation.

After you have defined a member as tension only, you have to look at the joint restraints of those members and make them pinned rather than fixed or rigid. That way bending moments or shear forces can not be transferred into the member.

The default behavior of Multiframe in regards to pinned and fixed joints and members is that all members and all joints are initially fully rigid. This means that there is complete moment transfer across each joint. If you wish to make a joint pinned for a truss situation, then you can use the Joint Type command to do so. This releases the moments and torsion at the ends of all the members attached to that joint. It also sets the rotations of that joint to zero.
 
If however you only wish to release the moments at the ends of some of the members connected to a joint, then you should use the Member Type command. In the Member Type dialog you have an option of which moments and torsion to release.
 
In general you will want to use a pinned joint when analyzing a truss structure and you will want to use the releases at the end of a member when you want to have a frame where a part of the frame is pinned and the remainder is rigid. This is common when you have a continuous top and bottom chord in a truss, and you just wish to apply member releases to the bracing members between the chords.
 
You should not pin a joint and also pin the end of a member attached to that joint.