Hi

I am starting PovRay from another application with following command:

%povray% /EDIT Test1.pov /RENDER Test1.pov
where %povray% is
    C:\Programme\POV_Ray\POV-Ray 3.7\bin\pvengine.exe
or
    C:\Programme\POV_Ray\POV-Ray 3.7\bin\pvengine-sse2.exe

 >>> case 1: If PovRay is NOT running, it will be started and following 
error message will be displayed:
----------------------------------------------------
IO Restrictions prohibit write access to 'Test1.png'
Failed to start render: Cannot open file.
----------------------------------------------------
But 'Test1.png' doesn't exist - it's the file PovRay should create!!!

 >>> case 2: If PovRay is already running, it will display 'Test1.pov' 
and start rendering as expected.

I was testing the same situation with PovRay 3.62.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
PovRay 3.62 does not show an error messages!
It works perfect in both cases!!!
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Here are my preferences I set before ...
- Menu: Options / * Keep single instance
- set '+FN' to command line option field to save PNG pictures

And here's the test file I use
-----------------------------------
// File: Test1.pov
camera {location -3*z}
light_source {<9,9,-9> 1 parallel}
sphere {0 1 pigment {rgb<1,1,0.5>}}
-----------------------------------

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