How to Solve LibreOffice Crashing When Printing Document that has Image

Problem: LibreOffice crashed when printing document that has image. Non-image document is not affected.

Applies to:

  • all version of LibreOffice from version 5 and above. Version 4 and below are not affected
  • printer model Fuji Xerox CP 05 b

Solution: download the latest printer driver from printer’s manufacturer and use the latest version. In our case, the latest driver is version 2.6.19.0 from FujiXerox web site.

How to Run VCOM as Windows Service Using “AlwaysUp”

VCOM

VCOM is a Windows Application. It is NOT a Windows Service. VCOM will auto-run when user has logged into (entering user name and password) Windows. Otherwise, VCOM will not run.

To run VCOM as a Windows Service you can install a 3rd party software call “AlwaysUp”.

 

Install & Configure VCOM in AlwaysUp

  1. Download “AlwaysUp” here … or from 3rd party web site ….
  2. Install it.
  3. Add a new service.
  4. Point to the path of “vcom.exe”.
  5. Ensure the status is “Automatic”.
  6. To view the GUI of VCOM, click on “Switch to Session 0”.
    then it will display the VCOM GUI:
  7. To return to Windows desktop from VCOM GUI, click “Return now”.

 

Warning

  1. After VCOM service is started by AlwaysUp, sometimes, this message by “Interactive Services Detection” will appear “A program running on this computer is trying to display a message”:
    click on “View Message” to switch to VCOM GUI:

  2. To return to Windows desktop from VCOM GUI, click “Return now”.

 

 

How Does MOBTEK Q24 STK MODEM HUB (model B-8-L-SG) Work?

 

MOBITEK® Q24 STK MODEM HUB, model B-8-L-SG, has 8 modems supporting 8 SIM cards. Each modem in the hub has an IP address with different port number:

  • modem 1 => 192.168.1.10:961
  • modem 2 => 192.168.1.10:962
  • modem 3 => 192.168.1.10:963
  • modem 4 => 192.168.1.10:964
  • modem 5 => 192.168.1.10:965
  • modem 6 => 192.168.1.10:966
  • modem 7 => 192.168.1.10:967
  • modem 8 => 192.168.1.10:968

On PC side, you will need to install a virtual com port driver that will map com port to the IP address, e.g.:-

  • COM Port no. 11 => modem 1 (192.168.1.10:961)
  • COM Port no. 12 => modem 2 (192.168.1.10:962)
  • COM Port no. 13 => modem 3 (192.168.1.10:963)
  • COM Port no. 14 => modem 4 (192.168.1.10:964)
  • COM Port no. 15 => modem 5 (192.168.1.10:965)
  • COM Port no. 16 => modem 6 (192.168.1.10:966)
  • COM Port no. 17 => modem 7 (192.168.1.10:967)
  • COM Port no. 18 => modem 8 (192.168.1.10:968)

Then your Reload System/Software communicates with the COM port number, e.g.:-

  • Reload1.exe => MobitekSTKAPI.dll => DisplayMainMenu() => COM Port no. 11
  • Reload2.exe => MobitekSTKAPI.dll => DisplayMainMenu() => COM Port no. 12
  • Reload3.exe => MobitekSTKAPI.dll => DisplayMainMenu() => COM Port no. 13
  • Reload4.exe => MobitekSTKAPI.dll => DisplayMainMenu() => COM Port no. 14

Or if you are using multi-threading, then

  • Reload.exe => thread no. 1 => MobitekSTKAPI.dll => DisplayMainMenu() => COM Port no. 11
  • Reload.exe => thread no. 2 => MobitekSTKAPI.dll => DisplayMainMenu() => COM Port no. 12
  • Reload.exe => thread no. 3 => MobitekSTKAPI.dll => DisplayMainMenu() => COM Port no. 13
  • Reload.exe => thread no. 4 => MobitekSTKAPI.dll => DisplayMainMenu() => COM Port no. 14

How to Run VCOM as Windows Service

VCOM is a Windows Application. It is NOT a Windows Service. VCOM will auto-run when user has logged into (entering user name and password) Windows. Otherwise, VCOM will not run.

To run VCOM as a Windows Service you can manually create a Windows Service using these steps. However, take note that you cannot run VCOM as both Windows Application and Windows Service mode at the same time.

 

CONFIGURE VCOM AS WINDOWS SERVICE

  1. First, IP address of MobiGATE and all 8 modems must be properly configured in VCOM application.
  2. Disable “auto-start” in VCOM application:
  3. Exit completely VCOM application.
  4. Download and install Windows Server 2003 Resource Kit Tools from Microsoft web page or from here …
  5. Only 2 executable files are needed:
    1. INSTSRV.exe
    2. SRVANY.exe
  6. After you have installed, run this command in command prompt: 
    C:\Program Files\Windows Resource Kits\Tools>INSTSRV.exe VCOM "C:\Program Files\Windows Resource Kits\Tools\SRVANY.exe"
  7. Run Registry Editor (Regedt32.exe), check the registry to verify that the ImagePath value under “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\VCOM” is set to 
    "C:\Program Files\Windows Resource Kits\Tools\srvany.exe"
  8. Right click on VCOM, from the Edit menu, click “Add Key”. Type the following and click “OK”: 
    Key Name: Parameters
Class : <leave blank>
  9. Select the “Parameters” key, click “Add Value”. Type the following and click “OK”: 
    Value Name: Application
Data Type : REG_SZ
String : C:\Program Files\VCOM\VCOM\vcom.exe
  10. Exit Registry Editor and goto “Computer Management > Services” configure “VCOM” to run “Automatic”
  11. After service is started, 8 COM ports are created:

WARNING

  1. After VCOM service is started, then you start VCOM application, the application could NOT show all the 8 modems and 8 COM ports:
    VCOM application must be closed.
  2. If you want VCOM application to show all modems, then you must first stop the VCOM service, the only start VCOM application.
  3. VCOM cannot be running as both Windows Application and Windows Service mode at the same time.

 

Source: https://support.microsoft.com/en-my/help/137890/how-to-create-a-user-defined-service