After more investigation I have found out the exact cause of the problem. File names are incorrect in these specific folders:
```
dubbing_radio_f_data_per\Male01PER\RadioProtocolPER\Stealth\030_Teams
dubbing_radio_f_data_per\Male01PER\RadioProtocolPER\StealthEngage\030_Teams
dubbing_radio_f_data_per\Male01PER\RadioProtocolPER\StealthWatch\030_Teams
dubbing_radio_f_data_per\Male02PER\RadioProtocolPER\Stealth\030_Teams
dubbing_radio_f_data_per\Male02PER\RadioProtocolPER\StealthEngage\030_Teams
dubbing_radio_f_data_per\Male02PER\RadioProtocolPER\StealthWatch\030_Teams
dubbing_radio_f_data_per\Male03PER\RadioProtocolPER\Stealth\030_Teams
dubbing_radio_f_data_per\Male03PER\RadioProtocolPER\StealthEngage\030_Teams
dubbing_radio_f_data_per\Male03PER\RadioProtocolPER\StealthWatch\030_Teams
```