Cause

You created a macro in the source project and added it to the target project (current project). The macro contains information about the symbol library <x> stored in the source project, from which you selected the symbols for the macro. Furthermore it contains details of the position <y> of the stored symbol library, set in the source project settings . This information is compared to the relevant settings in the target project when inserting the macro. In a concrete case the symbol library <x> cannot be generated in the position <y> in the target project, because it isn't stored there.

Solution

Store the symbol file where you want in the current project. Select Options > Settings > Projects > "Project name" > Management > Symbol libraries. In the Settings: Symbol libraries dialog under "Symbol libraries" select the position (row) <y>. In the field, click [...]. In the next dialog, select the missing symbol library. Click on [Open].

The symbol library is stored where you want in the target project.

Delete the macro in the target project and add it in again.