Home > Upgrading API v6.0 Client to API v6 > Upgrading a C# Client > Step 3: Recompile the coed
In most cases this will suffice. Most compilation errors will result from forgetting type renaming. Compilation errors may also occur, though far less commonly, due to:
§ Modification of a property or method signature in v6.1 compared to v6.
§ Removal of a property or method in v6.1 compared to v6.
See “Property and Method Changes in API v6.1” in this chapter for more details.