Messages posted by Northman

@gritts1: glad to hear that it helped at least one other user :-)
@QC2.0: Python 2.7.11.

I also had the R6034 error and found the issue. Some google results are pointing to a wrong or missing msvcr90.dll.
ProcMon shows that the R6034 error always occurs while the setup accesses c:\python27\msvcr90.dll. c:\python27 was in the path environment variable. Removing it from %PATH% did not solve the problem as PowerDVD seems to use Python as well and finds a local installation and tries to access that DLL.
So I removed Python and the setup works fine and PowerDVD is running now.
PowerDVD now uses the DLL from the winsxs directory.

Check your system:
Download ProcMon: https://docs.microsoft.com/en-us/sysinternals/downloads/procmon
Start and accept EULA. Press CTRL+E immediately to disable the excessive scanning.
Choose "Filter / Drop Filtered Events"
CTRL+L to open the filter options.
First drop down: "Details"
Second drop down: "contains"
Enter "msvcr" (w/o quotes) in the text field.
Click "Add" and "OK"
CTRL+E re-enables the scanning
Start the setup.

I will not give advice what to do now! The possibilities are endless.
Your result maybe an additional hint for the devs what's going wrong with their product.