MC 2026R2 Update 1

[kccadcam]

This is a little confusing....  
Do you uninstall 2026 and/or 2026R2 before installing this update?

Use this product to install Mastercam 2026.R2 Update 1 on a 64-bit operating system. It will not run on a 32-bit OS.

This product is a standalone installation and should not be installed on top of any previous versions of Mastercam 2026. Mastercam 2026 and Mastercam 2026.R2 cannot be installed on the same system. To uninstall Mastercam 2026.R2, go to Control Panel > Programs and Features and select Remove next to the Mastercam 2026 icon.

You must have a maintenance expiration date of January 31, 2026 or later to run this product. The version number of Mastercam.exe is 28.0.8789.0.

[jstell]

I asked the same on the mothership forum.  The response was that you can let mastercam auto-update from R1 Update 1, or R2, no need to uninstall.  The R2 U1 on the downloads page is a standalone install, and for that you would want to uninstall previous 2026 version, but you don't need to clear the registry or remove my- and shared- mastercam folders.

[MIL-TFP-41]

I ran a repair installation on an existing R2 installation. It did update it to R2-update 1 and and the bug I was seeing in transform appears to be resolved.