compliling error

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hi

normally i complie my software without erros but now when i complie i egt an
error below

Error 3 Unable to write to output file 'C:\Visual Studio
2005\Projects\A l-Taybat e-Clinic 2007\Al-Taybat e-Clinic
2007\obj\Debug\ Al-Taybat e-Clinic 2007.pdb': Unspecified error


haw can i solve it ?
--
Ammar S. Mitoori
IT Head QIMCO Co.
Tel : +9744831199
Mobile : +9745378400
Fax : +9744831643