Problems after opening a tiff file

[Bill Hell]

When I click to open, in Xara, a tiff photo image from within Windows Explorer or open it from within Xara using File\Open, it opens fine but it shows “Page 1 of 2” on the Status Line.
When I try to find the page 2 by scrolling down I get an “Access violation exception” message immediately after scrolling takes place, which reveals no second page.
If I click the down arrow on the on the extreme right of the Status Line , near the “Page 1 of 2”, nothing happens – no scrolling takes place, no second page - but the same “Access violation exception” message appears..
The same behaviour occurs if I open using New\Blank photo\Open

When I use File\Import and select “Insert” the file opens up with 3 pages – the first page is blank as expected, the second page displays the full sized tiff as “Image1” (300dpi) in the Status Line, but the third page displays a smaller sized version of the same tiff but as “Image 2” (300dpi).

Tiff file; - 3872 by 2592 pixels, 300dpi
Xara Xtreme Pro 4.0.4845
Windows XP Pro SP2
AMD Athlon 64 Dual Core Processor 4800+
NVIDIA GeForce 7800 GTX

Any one experienced anything similar or can offer an explanation for this behaviour?
Thanks