Just to note -- it came up before, that frequently this problem can be solved by:
ln -sf libcom_err.so.3 libcom_err.so.2
This "solution" will only work as long as you never use the functions of that library. If that library is ever accessed, your application will almost certainly crash. Don't do this. Ever. At the very least, never rely on it to work. Library versions change when interfaces change in incompatible ways.