Crystal 10 ServicePack3 installation fails

I went to install SP3 because of:
1.http://support.businessobjects.com/forums/message.asp?fid=251&sk=5&ps=25&pn=1&mid=143018
2. ADAPT00353320

The problem is that ServicePack3 won′t install the files giving me the install shield error:
1. "Failed to create backup folder -110"

that error shows only once and when I click OK on the message box the installation goes from 1% to 100% in 2 seconds (in other words, nothing gets patched).
I really need this SP3 installed as there is a bug that doesn′t allow my appliction to run.
(the same exception raises on my development machine)

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Failed to load database information. Details: The database DLL 'crdb_query.dll' could not be loaded. Error in File C:\DOCUME~1\anop3\LOCALS~1\Temp\{68D71403-5484-4650-B960-D55DB2523564}.rpt: Failed to load database information.
Web Server Specs: Windows 2000 Server (All service packs) IIS 5.0
my machine: WindowsXP Pro SP2 Crystal For Visual Studio 2005 Final - v10.2

Thanks a lot.

[1201 byte] By [PauloFaustino] at [2007-12-18]