Backupexec has stopped working

When I try to open Backup Exec, I get the error message "BackupExec has stopped working". When I veiw the problem details, this is what is listed.

Problem signature:
Problem Event Name: CLR20r3
Problem Signature 01: BackupExec.exe
Problem Signature 02: 16.0.1142.0
Problem Signature 03: 57f0f61d
Problem Signature 04: mscorlib
Problem Signature 05: 4.8.4069.0
Problem Signature 06: 5dc611cd
Problem Signature 07: 113a
Problem Signature 08: 61
Problem Signature 09: System.Reflection.AmbiguousMatch
OS Version: 6.3.9600.2.0.0.272.7
Locale ID: 1033
Additional Information 1: 6cd4
Additional Information 2: 6cd458e8d3a8156eab014cd5e8b92198
Additional Information 3: 3442
Additional Information 4: 34425249b0028229fa9de2be24d4a428

Can anyone advise me on how to resolve this?