Software versioning can be complex. The "15038" almost certainly does not refer to the primary release version (which is 15.0.x.x). Instead, it likely points to a specific released by CNC Software for their legitimate customers. For example, official documentation references an update to version 15.0.13.6. Searching for a specific build number like "15038" in the context of a crack is, in almost all cases, an attempt to find a way to bypass the legitimate software license enforcement mechanism.
While legacy versions are valued by hobbyists or shops running older hardware, operating this software on modern operating systems poses challenges: Software versioning can be complex