Error Opening file:TargetPoint.dwg when I open my model view

Question- I receive the error "Error Opening file:TargetPoint.dwg" when I open my model view and I also receive slightly different errors regarding other DWG files when I move around my model space or select parts.

Image

Answer- This error indicates that the default symbol files are missing from the system. Most likely what happened is you changed the DXK_SYMBOLPATH variable in order to set a standard for your company symbols. This variable can have multiple locations included in the string for example see the default US Imperial locations below

C:\TeklaStructures\<version>\environments\usimp\symbols\;C:\TeklaStructures\<version>\environments\usimp\template\bitmaps\;C:\TeklaStructures\<version>\nt\TplEd\bitmaps\;C:\TeklaStructures\<version>\environments\common\symbols\

Each location is separated by a semi-colon (;), so you can correct the issue by adding the default locations back to the DXK_SYMBOLPATH variable and then at the end add your custom location. For example see below, my custom location is C:\Tekla\Symbols

C:\TeklaStructures\<version>\environments\usimp\symbols\;C:\TeklaStructures\<version>\environments\usimp\template\bitmaps\;C:\TeklaStructures\<version>\nt\TplEd\bitmaps\;C:\TeklaStructures\<version>\environments\common\symbols\;C:\Tekla\Symbols

You can find out what the default location usually by looking in the environment role for the environment you are in. To do this first find your environment role ini file, it should be located C:\ProgramData\TeklaStructures\<version>\Environments\usimp and the name of the file is "env_US_imperial.ini". Open this file in notepad and there you can see the default locations, see below.

Image