Correct version of SP1 for Inventor 2010 is now available for download (Inventor SP1) . If you have installed a wrong version of SP1 which was posted to the same site a couple of days ago, please read the following.
Issues with the wrong SP
SP is not linked to the Live Update, so the installer will not recognize this as an available service pack and prevent you from adding or merging it to a deployment image.
We ran into a last minute problem which prevents users from borrowing ACAD/M licenses and which needs to be corrected as well.
Actions taken are :
1. Correct version of SP1 (253d Build) is available. Please install the right version of SP1 from the above link.
2. For the old one that has been installed, development team is working on a hot fix for the above issues and it will be released soon.
Note : The only way to check which build you have installed is,
Go to Windows Add/remove program.
•253b will have a "remove" button.
•253d exceptionally will not show a remove button and cannot be uninstalled via the regular UI.
The procedure to remove the build via the command line is documented in the Read me document of the SP.
Let us know, if you are facing any additional problems after installing the wrong SP1 from the above link.