Hi Mike, There are 3 areas where the projects units are defined. The rule file you mentioned, the Project_Config table in the project database and the design file itself. These 3 areas need to have the same values otherwise you will get messages that they are not same and certain functions in the software will not operate. The valid settings for B3D_SYSTEM_UNITS is either INCH or MM. This would be the reason you are getting error messages. So you have a couple of options here. 1. Create a new project with the settings that will match the design file units but calculating the UOR s out to match the design file master unit of FOOT. 2. Change your database table and Projdefe.rul to match the design file. HTH, Ian
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