I installed DraftSightV1R5 to Ubuntu12.04LTS.

The installation was able to use it successfully.

However, you can not open the file.

It does not open even dxf and dwg.

The following error message appears.

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Information

It is not possible to open a drawing file specified.

Please make sure that the file exists.

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It can be used to save the drawing which I made, but I can not also open the file.

Thanks in advance.