I am having a similar issue. I can confirm that my Hack/Mine version is 0.5.3 on both the server and client end and that my minecraft server is 1.2.3
The fact of the matter is, Even with matching versions the issue persists. Therefore, the OP's question is NOT retarded and may, in fact, be an issue. Perhaps some sort of bug in the server files or some other, less obvious mistake.
Need help on fixing "Outdated Server" Issue
in Hack/Mine Discussion
Posted
I am having a similar issue. I can confirm that my Hack/Mine version is 0.5.3 on both the server and client end and that my minecraft server is 1.2.3
The fact of the matter is, Even with matching versions the issue persists. Therefore, the OP's question is NOT retarded and may, in fact, be an issue. Perhaps some sort of bug in the server files or some other, less obvious mistake.