Clock-Error --> Two ports have different clocks, where they should have the same

I got the same problem in PLL configuration window:

---

Cannot implement configuration. Update multiplier and divider values and click "apply".

---

This message appears with all possible parameters. Any idea why? I am using Matlab 2010a and DSP-Builder v9.1.

I would like to generate a clock and feed it to various other blocks as input block. In the meantime I implemented a Quartus PLL clock with HDL-Import block. But with that solution I cant select this generated clock as input clocks for other blocks.

The background: My project needs to have one clock for all components. I also need to output this clock. But without being able to set parameters in the PLL configuration windows I can't achieve this.