iReport 1.2.8 and jasperreports-1.2.1.jar

[syamat]

When I place jasperreports-1.2.1.jar in iReport 1.2.8 lib directory (removed the original jar) and tried to compile the report nothing happens no error, nothing

 

Output of compile

-------------------

Report name synchronized with file name

iReport file C:Documents and Settingssyam.ireportrecentFiles.xml successfully updated!

 

but when i place the original jar everything works fine. Does that mean that iReport1.2.x will work with only jasperreports-1.2.x.jar.