[PyMOL] APBS problem

[Albert <mai...@gm...>]

Hello:

I am trying to calculate the protein surface electstatic properities by 
APBS plugin in pymol. But it always failed with messages:

Could not find/tmp/1.dx so searching for /tmp/1-PE0.dx
ObjectMapLoadDXFile-Error: Unable to open file!
ObjectMapLoadDXFile: Does '/tmp/1-PE0.dx' exist?

Does anybody has any idea how to solve this problem?

thx a lot