Complie Error: The type job3.out1Struct must implement the inherited abstract method IPersistableRow<job3.out1Struct>.writeData

[Anonymous]

Hi everyone,

I am new to Talend. I recently attended a course where I create different workflows and everything worked perfectly.

Now I have installed Talend in my laptop to practice (Version: 7.2.1). I have copied all my jobs and data into the same exact location as the path where I was working during the course. I am able to open all the jobs and see the configuration of each component, however, when I try to run any of them, I get different compile errors.

I copy two of the here as an example:

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At least job "job3" has a compile errors, please fix and export again.
Error Line: 829
Detail Message: The type job3.out1Struct must implement the inherited abstract method IPersistableRow<job3.out1Struct>.writeData(ObjectOutputStream)
There may be some other errors caused by JVM compatibility. Make sure your JVM setup is similar to the studio.

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At least job "job2" has a compile errors, please fix and export again.
Error Line: 229
Detail Message: Incompatible conditional operand types Exception and TDieException

There may be some other errors caused by JVM compatibility. Make sure your JVM setup is similar to the studio.

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I have no idea why the jobs are not working. I you could give me a hand with this I would be really grateful!!!! 

Thanks!!