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Compilation error: Duplicate parameter e

Hi all,
TOS 4.1.1.r50363.
I have a job where I have amongst other, a tFtpDelete and a tFtpPut (in the same subjob).
Everything was working peachy, until somehow, java code got messed up with "duplicate parameter e". Indeed, in the java code, the exception variable used is always 'e' which causes compilation errors.
It didn't do it before. In between, I was (de)activating components, subjobs back and forth for testing, and today, I have this and I don't know how to solve it.
I cannot modify the variable names manually. Any ideas on how to workaround this issue?
Thanks a lot.