Try reapplying by using the protocol below, which I find useful;

• Remove the N-terminal Fmoc group before starting the cleavage.
• Slurry the resin in the cleavage cocktail.
• Swirl the mixture. Normally, cleavage will take 1 to 2 h.
• Filter the resin in.  Wash the resin 3 times with small portions of TFA.
• Combine the filtrates and add 8-10 times the volume of cold ether. Keep the mixture at 4 °C overnight to precipitate the peptide. 
• Filter the peptide. 
• Wash the crude peptide further with cold ether.

The problem with cold ether washing is that it would not remove some impurities, which may be the case here. Then you need to first mix your compound with isopropanol and only then add excess ether.

Another source of problems can be monomers. You may want to see TLC or HPLC if there is a detectible impurity. Oily yellow impurities can form from amine oxidation, like with arginine. If that's the problem, you either need chromatography or EP purification, or make peptide from scratch with fresh monomer.

Hope that helps!

Cool diethyl ether up to - 10 degrees not more than this , slowly add the filtered cocktail .store the precipitate below -10 degree by removing coolant .add tap water.stirr the precipitation for 5 to 10 minutes.keep aside for settling the precipitate. If settled then decant it. Or if not settled filer it by getting the temp in plus side.

Or use another solvents like diisopropyl ehet