When I try to change the data type I get an error that there isn'.

[Guest]

Changing the data type from double to text will not let me. It gives me the
error that there isn't enough disk space or memory and then doesnt' save the
changes.

 

[Allen Browne]

This can happen if:
- the database is large (hundreds of megabytes), or
- the disk is nearly full (may need 3 or 4 times the mdb size spare), or
- the temp environment variable is invalid (some versions of Windows).

Try compacting the database:
Tools | Database Utilities | Compact

Create a new (blank) database. Then import the table from the database
File | Get External | Import
In the Import dialog, click Options, and choose Structure only.
Open the table in design view, and change the field to Text.
Then attach the table from the original database:
File | Get External | Link
Then use an Append query (Append on Query menu in query design view) to
populate the new table from the attached table.