A simple google can get:
Common problems such as Windows Error Code 0x80040154 can be resolved with without too much difficulty. In this article we will go through solving the problem and how to prevent it in the future.
What happens
If you are registering an ATL server, you may see this error code. In the case of DLLs, regsvr32.exe will generate this error. In the case of EXEs, calling _Module::RegisterServer (CComModule::RegisterServer) in _tWinMain() will generate this error.
For detail: http://www.error.info/windows/registry-0x80040154.html
Cheers,
andy