https://community.graphisoft.com/t5/Modeling/Roof-maker-script-error/m-p/152257#M81899 The mentioned Master_GDL file appears twice in your loaded libraries.<BR /> Search for them and remove one of the instances, then reload the libraries and it will be fine. Tue, 26 Aug 2008 09:42:23 GMT Laszlo Nagy 2008-08-26T09:42:23Z https://community.graphisoft.com/t5/Modeling/Roof-maker-script-error/m-p/152256#M81898 <DIV class="actalk-migrated-content"><T>Hi,<BR /> <BR /> I am trying to open my working file at the starting time I have received script error message (please check attached image). It asked to stop or continue option, But on of My boos need not open that window at the opening of the working file. Can any one help me how can I rectify this issue.<BR /> <BR /> Thanks,<BR /> Nagesh</T></DIV><BR /><span class="lia-inline-image-display-wrapper" image-alt="Roof maker error.JPG" style="width: 315px;"><img src="https://community.graphisoft.com/t5/image/serverpage/image-id/10150iBE991A53815B425C/image-size/large?v=v2&amp;px=999" role="button" title="Roof maker error.JPG" alt="Roof maker error.JPG" /></span> Tue, 23 May 2023 13:08:56 GMT https://community.graphisoft.com/t5/Modeling/Roof-maker-script-error/m-p/152256#M81898 Anonymous 2023-05-23T13:08:56Z https://community.graphisoft.com/t5/Modeling/Roof-maker-script-error/m-p/152257#M81899 The mentioned Master_GDL file appears twice in your loaded libraries.<BR /> Search for them and remove one of the instances, then reload the libraries and it will be fine. Tue, 26 Aug 2008 09:42:23 GMT https://community.graphisoft.com/t5/Modeling/Roof-maker-script-error/m-p/152257#M81899 Laszlo Nagy 2008-08-26T09:42:23Z