When i split a transaction, kmymoney doesn't allow me to add decimals, when i validate it removes the numbers after the comma and replace them by zero

I add them by the integrated calculator or manualy

In the ledger it works fine

KDE 4.14.5
Kmymoney 4.6.6

The was a fix in that area (Bug #331638) but that could cause something like this only if the decimal precision of the currency is not properly setup. In other words if the currency precision is passed as 0 from the account then the behavior you described would happen.

I've checked again and that fix is only available starting with version 4.7.0.

I installed the 4.7.1 and it is ok now

Thanks