In cases like this, it is important to see the settings and logs of the nodes that led up to the problem. If you can, please respond and attach two model packages -- one from the Tree attached following the Data Partition node, and the other from the Tree attached to the Impute node. The irony is that the Tree does not need imputed values so the Tree should not be dependent on whether values have been imputed or not. In fact, I would argue that the Tree node can only be hampered by imputed values since it can no longer distinguish between actual values and imputed values unless you keep all of the missing value indicator variables.
You can create a model package following the steps outlined in SAS Note 46764 - Creating a model package (.SPK file) in SAS® Enterprise Miner(tm) available at
http://support.sas.com/kb/46/764.html
You might also consider reviewing SAS Note 41211: Techniques for testing, solving, or reporting problems that occur when using SAS® Enterprise Miner(tm) available at
http://support.sas.com/kb/41/211.html
And if there is not enough detail in the log, consider reviewing SAS Note 58396: Specify the MPRINT option in SAS® Enterprise Miner(tm) Project Start Code to display additional diagnostic information in node logs available at
http://support.sas.com/kb/58396
I look forward to hearing from you.
Cordially,
Doug
... View more