Error while reading a mat file in java

Hi , IM receiving the following error while trying to read a mat file in java. Could not decompress data: java.io.EOFException: Unexpected end of ZLIB input stream.

On my analysis , I have four colummns in my mat file generated , I have separated all the columns and found that this error is actually coming while trying to read one feild in the mat file, which is of type double, but while other cells are of the same type. Is there any limitation in the jar which reads the mat file

Im really have no idea of why is this happening ?? :(

Any help would be really appreciated.