Solution cannot be loaded because .NET Framework 3.5 is not installed

Error "The following solution cannot be loaded because the .NET Framework 5.5 is not installed Merlin.vsto" when opening Excel after installation. Solution Locate the folder: C:\Program Files(x86)\Common Files\Microsoft shared\VSTO\10.0 Where 10 is the Excel version number so may be different on your pc Rename the file VSTOInstaller.exe.Config   to VSTOInstaller.exe.Config.old...

Exception reading manifest from

Error When you click on the MerlinXL vsto installation link you get the error Exception reading manifest from Cause Old and out of date .NET version on the the client pc. Old or out of date VSTO office runtime The Security Certificated from Thawte used to sign the code was...

…general installer error

Issue The following error message is displayed when trying to install the vsto addin The following Microsoft Office solution cannot be installed due to a general installer error: Cause The Windows Application log is full Answer Clear the Windows Application log Ensure the Application log Property Overwrite as required is...

Strong name signature not valid for this assembly stdole.dll

Symptom When installing the vsto addin it fails with the following error Strong name signature not valid for this assembly stdole.dll Cause The Choose a String name key file has not been set in Visual Studio when the project is published Answer: Developers: Choose a pfx file that does not...

The value of the property ‘type’ cannot be parsed”

Symptoms: During the vsto installation you receive this error message Cause A corrupted or out of date VSTOInstaller.exe.config file Answer Locate the VSTOInstaller.exe.config file and rename it with suffix.old This file is located in C:\Program Files (x86)\Common Files\microsoft shared\VSTO\10.0 Then try the installation again

The referenced assembly is not installed on your system

Symptoms During installation of the VSTO you receive this error message The referenced assembly is not installed on your system (Exception from HRESULT: Cause Possibly a Corrupt App store in your personal profile Answer Rename the 2.0 folder at this location and try again %userprofile%\Local Settings\Apps\2.0" e.g.: C:\Users\username\Local\AppData\Apps\2.0  

Downloading file///…….MerlinXL.dll.manifest did not succeed

Error: When clicking on the MerlinXL.vsto link on the MerlinXL install page an error appears warning that: There was an error during installation Downloading file:///...........MerlinXL.dll.manifest did not succeed Cause: 1. You tried to install from a browser other than Internet Explorer/Edge (Microsoft !) 2. You saved the link to your...

Specified argument was out of the range of valid values

Symptoms: Error when installing the VSTO Specified argument was out of the range of valid values. Answer: Delete the folder: %USERPROFILE%\AppData\Local\Apps\2.0 e.g.  C:\Users\simon\AppData\Local\Apps\2.0 You may need to reboot the pc first if the folder is "in Use"  

..application with the same identity is already installed

Unable to install this application because an application with the same identity is already installed When installing or re-installing the MerlinXL vsto addin you may receive an error message: Error Message "Unable to install this application because an application with the same identity is already installed. To install this application,...