SAP Dashboard Designer Installation Error

I have installed SAP BO version 4.2 SP4 Client tool and want to install SAP Dashboard designer version 4.1 SP3 but its giving following error.

So i got one link (Assertion failed!) on which same error has occured but not getting from where to download (51051288.zip).

So, my two concerns are :

1. Is this compability error (SAP BO client tool 4.2 SP4 and SAP Dashboard designer 4.1 SP3)

2. I Searched on Google to Download (51051288.zip) but not getting the same and from where to Download and where to install (51051288.zip) ?

Thanks in advance !