R6025 Error when loading old savegame

[rebi]

I am getting R6025 - pure virtual function call error from Microsoft Visual C++ Runtime Library when loading an older Ironman save game ,then game crashes to desktop. I know that the new patch does not guarantee compatibility with older save but this is the only savegame I have that fails to load. My all other savegames including Ironman saves and even a WC save from a much later date loads without an error.

contents of the error log are:
[sound.cpp:250]: Sound click not found.
[sound.cpp:250]: Sound click not found.
[sound.cpp:250]: Sound click not found.
[sound.cpp:250]: Sound click not found.
[sound.cpp:250]: Sound click not found.
[sound.cpp:250]: Sound click not found.
[sound.cpp:250]: Sound click not found.
[sound.cpp:250]: Sound click not found.
[sound.cpp:250]: Sound click not found.

 

[AndrewT]

Roll back to 1.7.3, if that's the version the game was made, in the Steam-EU4-properties-beta tab.