Have a client that has extensively (hundred's of PDF forms on a heavily used state government web site) made use of the FDF Toolkit. Most of their presentation layer is still in ASP with plans to convert to .NET over the next 2 years.

What has been converted to .NET (very little) uses an Interop version of the FDF Toolkit.

It has become necessary for them to move their Web/Application servers to Windows Server 2008 x64. We've tried everything to get the FDF Toolkit running without issue but to no avail. I've come to the conclusion that I'm going to need to create a custom component and surrogate process to get this to work. Which means all the code that uses the FDF Toolkit will have to be touched, even though it may be minimal.

My questions are:

1. Has anyone else found an easier solution to get code that uses the FDF Toolkit to run on Windows Server 2008 x64?

2. Beyond this issue, what is the preferred replacement technology for the FDF Toolkit with .NET (XML Forms?)?

They have lots of PDF forms that are filled in using the FDF Toolkit after the data is collected on the web page (or data is read from a database). So any replacement technology would need to allow for the same "fill-in" methods.

Any suggestions will be appreciated.

Thanks.