Mises' criticism of centralized economy

Could someone explain Mises' criticism of command economy as "uncalculatable" too someone unversed in the academic language he uses?

I don't know Mises, but i can tell you that economic centralisation equals increased productivity. It should just be workers controlling their enterprises and selecting a colleague to go (centrally) plan at the national or trans-national workers' council in communication with the soviet which listen professional revolutionaries that set the economic goals to reach communism. Wanting to have a decentralised economy is counterrevolutionary and against basic facts of economic progress. I want productivity and not some sectarian bullshit.

Mises projected that without a market economy there would be no functional price system, which he held essential for achieving rational and efficient allocation of capital goods to their most productive uses.

For instance, he believes that the economy is too complex to determine in annual plans to allocate the needs of the populace, and a market economy is the only system suitable to confront the influxes.

Then he goes on about how money must be used to have a market economy for capital goods etc, then goes on further to say that since command and control economy is insufficient, the socialists waste capital goods.

I disagree with the old bastard because only a plan devised by involving the people as a whole can meet the needs of the people as a whole.