LASSymbols.DLL Failed to register


While installing LP360 or True View EVO user encounters the error, “Module C:\Program Files\Common Files\LP360\LASSymbols.dll failed to register.” (v2018.1 and later) or “Module C:\Program Files\Common Files\QCoherent\LASSymbols.dll failed to register. HRESULT -1073740940” (version prior to v2018.1). Multiple errors of a similar nature for other DLLs also occur if one continues with the installation.

LASSymbols Failed to Register
LASSymbols Failed to Register HRESULT -1073740940

Probable Resolution #1:

  1. Download and install the latest version VC++ redistributables from
    1. x64 for LP360 and True View EVO
    2. x86 for LP360 for ArcGIS
  2. Reboot the machine.
  3. Try installing LP360 or True View EVO again.

Probable Resolution #2:

I am planning to fly in low light conditions. Can I change the settings of the camera?
To change the camera settings on a TrueView or microdrones system follow these steps:

  1. Download the file: TrueView system or microdrones system.
  2. Open the file with notepad.
  3. Change the exposure time. Recommended: 1/500 for cloudy days and 1/1000 for sunny days
  4. Save the file.
  5. Copy the file to your UMS.
  6. Next time you collect data with your payload, the exposure time will be updated with the value added in the file.
Picture showing the inside of the TV and md file
Camera configuration file

If on a Windows 7 or Server 2008 R2 operating system with Windows Update KB4041686 or similar installed:

  1. Continue through the errors to complete the installation.
  2. Open an elevated command prompt by right-clicking on Command Prompt and selecting “Run as Administrator”
  3. Change directory using “cd “c:\Program Files\Common Files\LP360″” (v2018.1 and later) or “cd “c:\Program Files\Common Files\QCoherent”” (version prior to v2018.1).
  4. Execute regall.bat to register the DLLs that erred when using the MSI by typing “regall” at the command prompt.

Probable Resolution #3:

Roll back the Windows updates. Install LP360. Then install the Windows updates.

Probable Resolution #4:

There may be something else going on with your machine configuration that is interfering with the proper installation of LP360. From an elevated Command Prompt (right-click on Command Prompt and select “Run as Administrator”), please run the following command using the full path to where you have the 32-bit MSI and writing the log file to a directory that you can access.

msiexec /i “LP360_v2017.1.54.7.msi” /L*v “log64.txt”

Send the log file that gets generated to


GeoCue Support has written 630 articles