created an attachment (id=158570)
screenshot

description:
error message is not correct when the data set parameter link to a report parameter allow multiple value.

build number:
2.5.2.v20100209-1429

steps to reproduce:
1. new a report parameter.
2. new a sample data set with parameter, link the data set parameter to the
report parameter.
3. edit the report parameter to allow multiple value.
4. open the edit data set dialogue and go to "parameters" tab, check the error message.

expected result:
the name of the data set parameter is "param_1".

actual result:
1. data set parameter "newparameter" sh...a multi-value type report parameter.
2. even there is enough space for the whole message, "..." is used instead.
(see the screenshot).

error log:
n/a
correct the error message on the data set parameters page to properly indicate the error cause.

so this bug has been fixed.
verified in build (2.6.0.v20100317-0630), closed.