Installation export SOLMAN7.2 (ERROR in uploading path during installation with SWPM)URGENT!! PLS

Hello

I am installing Solution Manager 7.2 on RHEL7 unicode, kernel 745 for the first time.

SWPM:SP19

On the phase to choose path for Installation export 1, it gives me error saying :

The integrity check for [DB/ADA/DBSIZE.XML] of installation export1 solution manager 7.2 sr1 failed DIAGNOSIS: the content has been tampered with and must not be used. Solution: Ensure that you use the latest available version of installation export1 solution manager 7.2 downloaded from the sap service marketplace and do not change its content.

But i did download the latest version for installation export and did not change any content of the media...

What could be the possible reason for this error?

Any help would be appreciated. PLEASE.