Just installed a new version on my second system and my old system is an old version when i try to open the old version it gives database error so i installed new version now i get this error

What version is the old one? What OS are you using? Looks like your system may not have the correct. Net installed.

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version 4.0
and XP the old system admin setup this system am a new worker there

It requires .net 4 and xp will not support that. You can only run version 3 or under on xp. Time to upgrade XP is close to 20 years old now.