HI Marc, At least in C++ null character (\0) means end of strings and as I remember same thing applies to files. In your position I would try to avoid those null characters unless you have a really good reason for that...
Have you tried send BlobMessages without those NULL chars appended? -- Márcio Geovani Jasinski Blumenau, Santa Catarina Fone: +55 47 9653 4899