SQL & PL/SQL :: ORA-01003 No Statement Parsed On CREATE TABLE

I have the following create table statement:

create table SELECTION_BOOKMARK(
INSTALLATION_ID SMALLINT NOT NULL,
BOOKMARK_ID SMALLINT NOT NULL,
NAME VARCHAR2(50) NOT NULL,
SORT_ORDER SMALLINT NULL
);

When I execute this statement as part of a SQL script, it throws the error "ORA-01003: no statement parsed". If I execute it as a stand alone sql command, it returns no error.

Here's the strange thing, though. Even when it throws the error message the table is created. Later on in the script, I execute the following command:

alter table SELECTION_BOOKMARK add primary key(INSTALLATION_ID,BOOKMARK_ID);

This command also throws the above mentioned error, but once again the command executes - the primary key is created.Well, I don't like having a script that throws errors. Eventually I'll have to give this script to a dba in another organization and I don't want my script to be throwing errors - even if it's apparently working correctly despite the errors.