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Error 1720 installing software for Shoretel Call manager

We just got a new phone system in our office (ip phones) and the desktop software will not install on a couple of computers.
Both computers are Vista SP2 (just like the others where the install worked fine) but am getting an error 1720 referring to the Windows Installer.
I haven't been able to find the correct Windows Installer for these machines, or else it isn't working correctly.  I tried to install 4.5 windows installer and it just kept telling me not enough disk space (which is completely not true).  So I searched for windows installer for Vista and wasn't able to find what I thought was the exact version, or any version I could get to work on these two machines.
Attached is the description of the error in Event Viewer

Error-Event-Viewer.jpg
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bugsyshare
Asked:
bugsyshare
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1 Solution
 
Jackie ManCommented:
Your Vista is 32 bit or 64 bit?

Which version is your Shoretel Call manager?
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Jackie ManCommented:
Vista Home Premium or Business edition?
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bugsyshareAuthor Commented:
Vista Business 32 bit
Shoretel  build 14.21.4905.0
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Jackie ManCommented:
Have you tried the fix below.

VISTA...Start > All Programs > Accessories... Right-click on "Command Prompt" and select "Run As Administrator"

Type the following ..  regsvr32 scrrun.dll
Click "Enter"..you should receive a message that the "..dll was successfully registered.."
Type the following ..  regsvr32 vbscript.dll
Click "Enter"..you should receive a message that the "..dll was successfully registered.."

Source: http://www.pdssupport.com/esupport/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=20&nav=0,3
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bugsyshareAuthor Commented:
Yes, tried that and still get same error.  I don't have the option to "run as administrator" but i'm logged in as administrator and the RUN command is in bold so I believe i am running as administrator anyway.
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Jackie ManCommented:
When you type cmd in the Windows Search, you will do the icon for DOS Prompt, right click the icon and select "Run as Administrator".

In Vista, you need to "run as administrator" for running commands in DOS command prompt regardless whether you have login as local administrator or not.
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jtaylor42vCommented:
This installation error has been resolved in the past by reinstalling the Microsoft Distributed Tracsaction Coordinator using the following steps.

Reinstall MSDTC Reinstall the Distributed Transaction Coordinator (MSDTC)
 (Win2k/WinXP/Vista): Execute commands       

Net stop msdtc
Msdtc -uninstall
 
Delete registry keys:
 [HKEY_LOCAL_MACHINE \SOFTWARE \Microsoft \MSDTC]
 [HKEY_LOCAL_MACHINE \SYSTEM \CurrentControlSet \Services \MSDTC]
 
Execute commands:       Msdtc -install
Msdtc -resetlog
Net start msdtc
       
More Info in MS KB Q240038, Q279786, Q873160

We also have a client who modified the Call Manager .msi file to remove the script that causes the error and found success.

Best of luck!

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bugsyshareAuthor Commented:
I found someone yesterday that knew how to edit the .msi file and that's what finally worked so I will close out this ticket.
Thanks for the info.
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