@SebastianD I suggest you enable DEBUG level logging on the upgrade config file and try again. One thing I have found is that at DEBUG there is a lot more information on what is happening. I would also suggest that you build your 19.1 solution first to ensure it is complete before you try to upgrade it.
@SebastianD Look at line 312. There appears to be something wrong with the product version listed in this file. Has it been manually altered? Can you show me that file?
Invalid Product Version - ‘19.1’ in E:\Timon_Pumbaa\Timon_Pumbaa\Timon_Pumbaa.osproj
@SebastianD I think the best way to help you is to open a support request. They can examine the 19.1 code and see what is going on. If you do open a support request, please list the number here. My suspicion is that this is related to the culture of your machine.
@ThomasSasnett Hi, thanks for help but could you tell me how to open support request?
All I can find is another forum question.
Edit: Ok I think I found it but:
In order to create a support ticket, you must be added as a contact to a client or partner account. Please reach out to a support administrator to be added.
Your Support Administrator might also be called your Support Contact Administrator or Account Administrator. A Support Administrator adds and removes support contacts, among other duties. For more information, see Understanding Support user roles and Creating a Support ticket.
@SebastianD I would check the release notes to see if a patch has been released. If you did open a support request, they will let you know when and in what version.