This has been identified as a result of Kaspersky Total Security automatically quarantining the CrashifyUploader.exe without notification.
The CrashifyUploader.exe is used to upload crash data to our servers, and is not malicious software.
You should be able to restore the CrashifyUploader.exe via Kapersky Total Security. Additional exceptions may need to be put in place to prevent the issue reoccurring.
If you are not using Kapersky Total Security but are experiencing the same error, please look in to whether your Anti-Virus could be interfering with your installation.