Issues on installing multiple NAV 2018 NSTs

Hi to all,

I just solved an issue on installing both RTM and CU01 NAV NSTs on a server.
My situation was:
- NAV 2018 RTM (B19394) installed by DVD
- NAV 2018 CU01 (B19846) installed by copying the ServiceTier folder on the CU01 DVD.
Tried with and without portsharing.
CU01 service fails to start, event log gives me this error

Log Name: Application
Source: .NET Runtime
Date: 18/01/2018 12:34:48
Event ID: 1026
Application: Microsoft.Dynamics.Nav.Server.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.TypeLoadException
at Microsoft.Dynamics.Nav.WindowsServices.DynamicsNavServer.Main(System.String[])

Log Name: Application
Source: Application Error
Date: 18/01/2018 12:34:48
Event ID: 1000
Faulting application name: Microsoft.Dynamics.Nav.Server.exe, version: 11.0.19846.0, time stamp: 0x5a3c0f77
Faulting module name: KERNELBASE.dll, version: 10.0.14393.1770, time stamp: 0x59bf2ba6
Exception code: 0xe0434352
Fault offset: 0x0000000000033c58
Faulting process id: 0xe58
Faulting application start time: 0x01d390505873c3e6
Faulting application path: C:\NAV\NST\TESTCU0\Microsoft.Dynamics.Nav.Server.exe
Faulting module path: C:\Windows\System32\KERNELBASE.dll
Report Id: dbe4dda7-b2fa-4627-92af-1b37b804f12a
Faulting package full name:
Faulting package-relative application ID:

I solved the issue by doing this:

1) Uninstall RTM NST from control panel (kept other created services on copies of DVD folder named "ServiceTier")
2) Install CU01 NST from dvd
3) Create multiple copies of the service by copying the "Service" folder located on "C:\Program Files\Microsoft Dynamics NAV\110\Service"

That way both RTM services and CU01 can run without issues.

I guess there are some differences on files created by the Setup and the DVD folder of the CU01.
Hope that in future CUs this issue will be solved.

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