[RESOLVED] pls help to fix this

when i try to load the form, i get an error like this; Error Loading File: chek the log file

i checked the log and got this.

Line 22: Class CRVIEWERLibCtl.CRViewer of control CRViewer1 was not a loaded control class.
Line 52: Class Crystal.CrystalReport of control CtrlCryport was not a loaded control class.

pls help me to fix this