These types of error are usually associated with corrupt or incomplete installs. To resolve this issue:
1. Perform a full uninstall of M&B (Guide)
2. Download and install the full version of the installer (i.e. download the 7.51 setup rather than the 7.50 to 7.51 update)
Assertion Failed / Agent.cpp
There is currently a known bug which generates an assertion failed error referencing the agent.cpp file. This is caused by deactivating the permanent corpses option. Activating this option should resolve this issue.
1. Perform a full uninstall of M&B (Guide)
2. Download and install the full version of the installer (i.e. download the 7.51 setup rather than the 7.50 to 7.51 update)
Assertion Failed / Agent.cpp
There is currently a known bug which generates an assertion failed error referencing the agent.cpp file. This is caused by deactivating the permanent corpses option. Activating this option should resolve this issue.