pigki, It looks like there is a bug with your address validation check.

It tells me that all of the following addresses are invalid:

12Fz925or3w2s67BTL2sJEVHDaNmqCM1gD
1LWHUuf7fyJgJg81EkM11wj6aa1BZEwE3
1V4hDzv3NkdjsqhAgCYtuuNZnTUBHZe6c
12HucuVtua253tvGUvMTCtjDBinvMAmBmU

128vvfUGzfh7bHeVV3NattmUzn4hXmAuTf
1y4mk9BBtkRtU8sYKHm3zgew4iYuWCQKH
1QKvnPnrF41wd9zr31rQfG1GNv3t9SXx5
12CzKMorC4qNprvgUfQzXyPsWL19t28Vwp

The first 4 are known good addresses that have been used previously and show in blockexplorer.
The other ones are new addresses generated with my bitcoin client.