HPL has black screen when opened

[Guest]

When I try to open LevelEditor.exe, the screen is just black. How do I fix it?



System Info
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OS Name - Microsoft Windows 7 Home Premium
Version - 6.1.7601 Service Pack 1 Build 7601
Other OS Description - N/A
OS Manufacturer - Microsoft Corporation
System Name - *** - TOSHIBA
System Model - Satellite P755
System Type - x64-based PC
Processor - Intel® Core™ i7-2630QM CPU @ 2.00 GHz, 2001 Mhz, 4 Core(s), 8 Logical ...
BIOS Version/Date - TOSHIBA 2.40, 12/15/2011
SMBIOS Version - 2.6
Windows Directory - C:\Windows
System Directory - C:\Windows\system32
Boot Device - \Device\HarddiskVolume1
Locale - United States
Hardwale Abstaction Layer - Version = "6.1.7601.17514"
User Name - ***-PC\***
Time Zone - Central Daylight Zone
RAM - 6 GB
Total Physical Memory - 5.91 GB
Available Physical Memory - 4.57 GB
Total Virtual Memory - 11.8 GB
Available Virtual Memory - 10.3 GB
Page File Space - 5.91 GB
Page File - C:\pagefile.sys

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Thanks! Love your game!