1. You can use Blank project installation
which does not uses executable.
This should work for sure.
2. You can backup the following files
from your existing Telerik\Sitefinity3.7 directory.
Uninstall the existing version of Sitefinity from ControlPanel
Then try to install Sitefinity SP4 and if everything is file, merge Websites
folder with the newly installed. You have to do the same for ProjectManager
file. This XML file contains data for all projects you have installed and reference to them
: if something fails, you will not be able to restore your old data
, because the previous version of Sitefinity will be uninstalled. You can try this on a virtual machine or anther server.
If you want you can provide us with RDP credentials to your/test server. We will log in and try to install Sitefinity or at least take a quick look what could be the problem. There are several more customers that reported the same issue, but we cannot reproduce it locally and we suspect the the problem comes from merging configuration between old project manager and the new one that is being installed.
All the best,
the Telerik team
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