>>Interesting problem...
>>
>>We have 2 class libraries, one named 1500, one named 2360.
>>
>>When we issue
>>SET CLASSLIB TO 1500
>>
>>Everything is Ok,
>>
>>But later when we want to
>>SET CLASSLIB TO 2360 ADDITIVE
>>
>>We get an error about the ALIAS is already used?
>>.
>>.
>>.
>>
>>After a little research, loading 1500 from the command window, SET('CLASSLIB') returns
>>
>>...\CLASSLIB\1500.VCX
>>
>>However, if you add a class library with a character name, it returns something like...
>>
>>SET CLASSLIB TO WAYNE
>>? SET('CLASSLIB)
>>...\CLASSLIB\WAYNE.VCX ALIAS WAYNE
>>
>>From what it looks like, you can't simultaneously load two libraries with numeric names??
>>
>>Anyone ever seen this?
>
>Why don't you set classlib to 1500 alias 1500?

Because 1500 is not a legal alias (an alias name must start with a letter or underscore).

Vlad