Hi,
thanks for your interest in Aspose products!
Can you please zip and attach the document (or part of the document) and images (use print screen Windows feature) of how it looks like in the editor on your machine and in Microsoft Word on your machine.
1) I can think of one possible reason which causes different formatting. Either document uses embedded font, or .NET instantiates font different from the font used by Word.
2) Editor supports character, linked character and paragraph styles, it doesn't support table and list styles yet. If DLL throws exceptions it may be that styles or inheritance links were damaged when document was opened. This should not happen (even if document has non-standard elements) and I think this is an issue which needs to be fixed. Please send us a document with the style and describe steps to reproduce the error.
Kind regards,
Michael