In the Cornered Rat quest (MQ202) you have to find Esbern, and bring him cak to Delphine.
When you reach the door to Esbern\'s room he is very wary of Thalmor agents and initially refuses entry. You may persuade him by saying Delphine sent you, you can tell him the password "Where were you on the 30th of Frostfall?", or you may explain that you are the Dragonborn. Now that\'s where the trouble begins. Sometimes you don\'t hear him speak, and when he goes to open the door, nothing happens. The door\'s closed, and you can\'t get in. This mod fixes Esbern\'s voice, and with it, you can make progress in the questline, without any problem.
Note: this fixes Esbern\'s all voice problems. And the 1.4 version fixed this bug.
Activate the mod via Nexus Mod Manager, or
extract the file, and put it in your Skyrim/data folder. After that, activate the esp file in the Starting Screen - Data files
For example: C:/Program Files/ The Elder Scrolls V - Skyrim/Data
Remove the esp. file from the Skyrim/data folder.
None so far :D