Android webview links not working for some

Question

Hi can anyone help explain what's going on:

I've developed a simple app which uses webview, it fully works on HTC's Legend and Desire as well as the emulator in Eclipse. But from emails received, people with Droid Xs and Galaxy Ss get a 'The requested file was not found. d2.html' error message after clicking a link from the main html page.

The code i'm using is:

document.write('<a href="d2.html?gp=' + h1 + '&hd=' + h2 + '&th=' + h3 + '">link</a>');

I've tried adding file:///android_asset/ but it gets the same results.

Any Ideas?