When Pov 3.5 Beta4/Windows launches another process from Post_Scene_Command,
it appends \r\n to the command line. This causes problems, at least when
invoked program is written in MSVC. MSVC startup code parses command line
and puts the parameters into argc/argv, however, it doesn't strip trailing
\r\n and last argument will contain these additional characters. If it's a
filename, CreateFile or fopen will fail.

This does not depend on the number of empty lines following
Post_Scene_Command.

This doesn't happen at all on PovRay 3.1g and earlier releases.

Regards,
Tomasz Sowinski

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