C# compilation failed

A C# compiler error prevented producing the replacement module. The message retains the Roslyn CS identifier and source location. The last good code keeps running; a module without a successful prior compilation is unavailable.

#Common causes

• Syntax, type or name-resolution errors in edited C# source.
• Missing or incompatible referenced types after a dependency change.

#Fixes

• Fix the CS error at the reported file, line and column, then compile or reload again.

• Correct module references and update callers to match changed dependency APIs.

• Code: ARA0900

• Constant: script::COMPILE_ERROR

• Reported by: ara-script, Ara.CompileServer