[ID-CS5.5] Plugin's compatibility issues with 64-bit OS

Hi All,

I build a plugin and tested it successfully in my InDesign CS 5.5 (32-bit OS).

But when I tested the same for InDesign CS5.5 in a 64-bit OS (the InDesign was 32-bit), it says that "the plugin is not compatible with this version. Ask your vendor to make a compatible version of the plugin".

What might be the issue?

Thanks