Symptoms
Must declare the scalar variable "@filterParamValue1a99f4de1f0b64186831b86be1a008b90ORDER".
Diagnoses
After upgrading from 4.6.7 to 4.6.9, existing forms using filters present the below error message. I was unable to find a cause or solution in support forum.
Must declare the scalar variable "@filterParamValue1a99f4de1f0b64186831b86be1a008b90ORDER".
Resolution
The fix supplied by labs TFS item: 533744 fixed the issue, this fix will be part of 4.6.10 (the next release of K2).