"Can you run Dungeonbuddy in Flex or Normal Raids?", or
"I tried using DungeonBuddy for Flex raids, and got a ' [DungeonBuddy 660]: No script found for dungeonId: 771' error. What's wrong?"
DungeonBuddy does not inherently support Flex or Normal raids at this time—only LFR is supported.
You can script Flex raids yourself by copying the files (.../Honorbuddy/Default Profiles/DungeonBuddy/.../whatever.xml and the corresponding .../Honorbuddy/Dungeon Scripts/.../whatever.cs file) and replacing the DungeonIds. The file names do not matter, only the DungeonId contained therein. You will also need to alter the C# class name inside the copied .cs file to prevent C# namespace collisions. Failure to do this causes 'compile errors' when using DungeonBuddy.
A normal raid or any dungeon that the player didn't join via LFG doesn't have a dungeon ID. So, the only way to get DungeonBuddy to load a script for a normal raid is to set raid type to Farm mode, then select the script for that raid.