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(4) Should the model file get corrupted, exporting and importing text file of the model may help to resolve the issue.

Running SAP2000 on a

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Windows XP SP3, Windows Vista and Windows 7

In Windows Vista (as well as in , Windows XP SP3 and Windows 7) , the User Account Control (UAC) is turned on by default. When UAC is turned on, you must explicitly give permission to any program that wants to use "administrator" powers. Any program that tries to use admin powers without your permission will be denied access. To get around this, you should simply right-click on SAP2000 icon and then click on "Run As Administrator..." (or "Run as..." in Windows XP SP3) command and run the program as administrator. You only needs to do this one time. Thereafter, the program can be run by double-clicking the SAP2000 icon as usual.

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Compatibility of CSI Products with Windows 7

As of 3/24/2010, we have not completed the formal testing of our products for Windows 7. However, a lot of our users are already using the current and previous versions our products on both the 32-bit and 64-bit versions of Windows 7 without any issues. Once the testing of our products on Windows 7 is completed and the results are conducive, a notification to that effect will be posted on our website and also included in our documentation.Please note that in Windows 7 (as well as in Windows XP SP3 and Windows Vista), the User Account Control (UAC) is turned on by default. When UAC is turned on, you must explicitly give permission to any program that wants to use "administrator" powers. Any program that tries to use administrative powers without your permission will be denied access and cause "Enexpected Error. Quitting" message. To get around this, you should simply right-click on program icon and then click on "Run As Administrator ..." (or "Run as..." in Windows XP SP3) command and run the program as administrator. You only needs to do this one time. Thereafter, the program can be run by double-clicking the program icon as usual.