This is a Subject Expression I put in my Mail component in my SSIS 2005 package but it's not liking the StartTime concatenation. I tried other ways but can't get it to allow this:
"Process Started by : " + @[System::UserName] + (DT_DATE) @[System::StartTime]
I get the error:
TITLE: Expression Builder
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Expression cannot be evaluated.
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ADDITIONAL INFORMATION:
The data types "DT_WSTR" and "DT_DATE" are incompatible for binary operator "+". The operand types could not be implicitly cast into compatible types for the operation. To perform this operation, one or both operands need to be explicitly cast with a cast operator.
Attempt to set the result type of binary operation ""Process Started by : " + @[System::UserName] + (DT_DATE)@[System::StartTime]" failed with error code 0xC0047080.
I tried to use CAST() but not sure if that's allowed or the syntax for it specifically in SSIS 2005

Cast @[System::StartTime] Problem
jasonc65
As the error message says, you cannot concatenate DT_WSTR & DT_DATE. Try:
"Process Started by : " + @[System::UserName] + (DT_WSTR) @[System::StartTime]
-Jamie