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After installing AECOsim Building Designer, the following error message is displayed when trying to open a file:
The following are potential resolutions to this issue:
1. Re-Install AECOsim Building Designer using recommended methods i.e. User Account Control must be set to "Never" and you also must have administrator rights to install the program.
2. If Office 365 is installed, it must be the locally installed version on the machine and not the cloud based version.
3. Try a repair install of Microsoft Office (assuming it is already installed).
4. Be sure to have the latest Windows Updates installed which will include the necessary and latest versions of vba files.