1: I used Bloatware Uninstaller for uninstalling Start10, also the registry leftovers where removed.
2: No restart, but Shutdown the computer
3: starting up the computer, than i take a look after start10 in Configuration screen under Apps, no tracks of Start10 anymore, so the program was good removed.
4: Running the install of 'Start10 1.70.exe' under my downloadmap from Stardock.
5: Start10 1.7 installs correctly in Windows 10 Pro 1903 with build number 18362.53
6: I opened Start10 to configure my Start10 Layout and Settings, they working correctly.
7: I restarded my computer and Start10 works fine
8: Object Desktop Manager doens't show up the 1.61 version installed it's now 1.7 version that showed up. ther is no more a conflict between the 2 versions in Object Desktop Manager anymore.
Hopefully this information may help other members.