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ansys flotran error message HELP!!

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Old   June 22, 2009, 02:27
Default ansys flotran error message HELP!!
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i`m modelling diverging flow in laminar fluid flow over an angled flate plate in 2D.
the no. of iterations is set at 1000.

when i run flotran for the solution,i get the error,

Error attempting to back up unuseable results file. Check READ/WRITE permission. File.rfo

Error While building flotran data object

i`m getting the same error ; with all simulations... however simple they may be.
how to overcome this??
thanks in advance.

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