"Invalid call" ERROR in DirectX, unknown reason for error!

[Electroman]

I have a program that uses DirectX 8 and worked fine. I've changed "something" and saved it and can't remember what I changed but now it gives me an error if I try and call anything like "DrawIndexedPrimitive" or "DrawPrimitive". After putting the error number in the directX Error lookup I got this:

'HRESULT: 0x8876086c (2289436780)
'Name: D3DERR_INVALIDCALL
'Description: Invalid call
'Severity code: Failed
'Facility Code: Unknown (2166)
'Error Code: 0x086c (2156)

Does anyone know why it would give me that error simply from tying to draw. btw it does let me draw meshes still using "Mesh.DrawSubset i"
Thanx for any help.