FB Version 2.5.1.26351

I have a table (test) with a unique constraint on a field ID_NUMERIC.
CREATE TABLE TEST
( ID BIGINT NOT NULL,
ID_NUMERIC INTEGER NOT NULL,
CONSTRAINT PK_TEST PRIMARY KEY (ID)
);
CREATE UNIQUE ASC INDEX UI_ID_NUMERIC ON TEST (ID_NUMERIC);


Table TESTFK is
CREATE TABLE TESTFK
(
ID BIGINT NOT NULL,
NUMERIC_ID INTEGER NOT NULL,
DESCR VARCHAR( 21) COLLATE NONE,
CONSTRAINT PK_TESTFK PRIMARY KEY (ID)
);

If I try to add a FK ..
ALTER TABLE TESTFK ADD CONSTRAINT TESTFK_FK
FOREIGN KEY (NUMERIC_ID) REFERENCES TEST(ID_NUMERIC)
ON DELETE CASCADE
ON UPDATE CASCADE;

I get the following error.
Script Error:
unsuccessful metadata update
could not find UNIQUE or PRIMARY KEY constraint in table TEST with
specified columns


I'm sure this used to work?
Any help appreciated.
Thanks
Cam






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