Cannot install CA Unified Reporter for UIM

Document ID : KB000101533
Last Modified Date : 14/06/2018
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When I want to install Unified Reporter 8.5.1 I get an error on the last step Install repository: 

Error distributing repository to unifiedreporter. Would you like to retry the current phase?

I have followed the instructions of KB000008947 but it did not help.
UIM 8.51
UR 8.51
When the Unified Reporter is installed it also installs JasperServer with it. If there is already an older version of JasperServer installed it will conflict and the installation will fail.
You need to review the environment and if that JasperServer instance is no longer in use you should first uninstall it and install the Unified Reporter again.