try going into your orbiter/install directory and run "testinstall.exe" any errors?
See:
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This diagnostic utility performs a few tests to verify a valid
Orbiter installation. Normally, this test needs to be executed
only once after installation. To run it again, execute the
'testinstall' utility in the Install subdirectory.
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Test 1: Directory structure
Orbiter root directory: D:\Arquivos de programas\Orbit 100830
Folder Config found.
Folder Meshes found.
Folder Textures found.
Folder Scenarios found.
Folder Doc found.
Folder Script found.
Folder Modules found.
Folder Flights found.
Folder Html found.
Folder Install found.
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Test 2: C++ runtime libraries
Runtime libraries ok.
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Test 3: Checking DirectX
Scanning dxdiag output:
Processor: Intel(R) Celeron(R) CPU 2.26GHz
Memory: 960MB RAM
DirectX Version: DirectX 9.0c (4.09.0000.0904)
Card name: VIA/S3G UniChrome Pro IGP
d3dim700.dll: 5.03.2600.5512 English Final Retail 4/14/2008 08:00:00 824320 bytes
For full DirectX diagnostics, see file dxdiag.log.
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Orbiter installation verification complete.
No problems found.
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:shrug: