I can't convert a png to a pdf. Can I get some help with this?

[bm94329849]

I just purchased an adobe png and I can't convert it to a pdf.

I continue to receive this error message, "could not complete your request (400).

This should be basic.  Can someone help with this problem?

Thanks,

BM

[try67]

Does it happen with just this file, or any file? How are you accessing the service, exactly?