Value cannot be null, parameter name: input

Hi,


I work as a project manager and use HTML files very often. However, i am having a problem to open one document today!

I get 3 error messages :

-">" is an unexpected token. The expected token i """or""" line 1, position 57

- Unexpected DTD delcaration. Line 1, position 3

-Value cannot be null. Parameter name :input

Have you ever such a problem with an Htm file ?

Could anyone help?

I had a look at the code but i don't seem to be able to understand where the problem comes from.

Thanks a lot.