CR 2008 SP4 hyperlink do not function

Hi,

I am upgrading my application from CR XI R2 SP6 to CR 2008.SP4

I notice this:

Hyperlink fiels (web, mail, file) DO NOT function when running on a Win 7 64 Bit, but they GO on Win 7 32 Bit

II tried both with rpt file saved with CR XI and rpt file saved with CR 2008 - same behavior ....

Also, on certain rpt files, when previewing I receive a "system.nullreferenceExceptions, (in CrystalDecision.Windows.Forms.pageControl.OnMouseMove) but only if mouse is positioned in header section of report when the CrystalreportViewer shows ..., as if I quicly move mouse in detail section before crviewer shows, the error don't raise .... (in CR XI R2 the same report has no problem). Again, the exception throws both with rpt XI / 2008 version, and this occurs both on 64 and 32 bit Windows 7