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Questions on Prior Releases -- ExtendSim 9 & Older

All ExtendSim versions are upwardly compatible. So ExtendSim 10 will read in models built in ExtendSim 9, 8, and 7. ExtendSim 9 will read in models built in ExtendSim 8, 7, and Extend 6. And so on.

However, ExtendSim is not backwardly compatible. Models and blocks you build in ExtendSim 10 cannot be read by earlier versions, such as ExtendSim 9 or ExtendSim 8. Models and blocks you build in ExtendSim 9 cannot be read by earlier versions, such as ExtendSim 8 or ExtendSim 7.

Your computer has probably been updated to Windows 10. In October 2017 Microsoft began rolling out Windows 10 Fall Creators update, release 1709. As with any update, there were some problems and some unintended consequences. One change was how the Windows memory manager worked, which caused a problem for older installations of ExtendSim such that it could hang up or crash on launch.

If you are using ExtendSim 7.0 to 9.2 released prior to November 16, 2017, get your fix file here.

If you are trying to enter numbers into editable text boxes in a block dialog and nothing appears, the problem could be that your system has been set to use right-to-left text for programs that do not use Unicode. This setting will work for programs that are built to expect to use right-to-left text, but not for programs that are not set to expect this.

You may need to change your system locale. The system locale determines the default character set (letters, symbols, and numbers) and font that you use to enter information and that are used to display information in programs that do not use Unicode. Selecting a different language for the system locale will not affect the language in menus and dialog boxes for Windows or other programs that do use Unicode. Try changing the default locale to English (United States) and check to see if this helps.

To change the system locale, follow the instructions at: answers.microsoft.com/en-us/windows/forum/windows8_1-desktop/how-to-change-the-system-locale-to-run-non-unicode/7a7c2bd2-b67b-4f89-ad76-04c2346e01c0.

If you receive an error message on your client installation when trying to check a license out of your ExtendSim 9 network license it is probably the result of not having sufficient permissions on your client machine to checkout the license. The checkout process requires some administrative rights on the client machine and many companies are restricting these rights from users.

Try using the right-click command "Run as administrator". If this doesn't work, then you may not have been granted sufficient permissions by your company on the machine to check out a license.