NOTE: THIS IS WRONG. I later came across troubles with this approach. As I had a suspicion, all DLL versions have to be the same. This “solution” posted here is no longer relevant. I do, however, have a solution, which I will post shortly.

UPDATE: I’ve posted an updated solution.

(There is a solution here, skip down a ways if that’s all you care about, but the introduction might help some)

Frustrating situation at work today. Here’s the situation. I’m currently building a new report system in .NET (currently implement in classic ASP, like the rest of the site). We’re going to be using the latest version of Crystal Reports (2008, or, version 12) as it supposedly solves some issues with scheduling and other server-side issues.

I’m at a point where I’m actually starting to implement the Crystal Report components and objects into the system to produce report previews, exports, etc. The first thing I do is write the code for exporting (it’s fairly simple). First, Excel exporting, because it’s the most common format our customers/users will use.

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