bad argument stringp nil

[Anonymous]

Using the Burst command and having the following error message pop up.

Command: _ai_selall Selecting objects...done.
Command: B B 171 found
\
bad argument type: stringp nil

Any ideas on how to fix this?

[Kent1Cooper]

Have you changed the command alias to assign B to BURST rather than the initial default BLOCK?  [I wouldn't have thought you could do that, since BURST is not a native AutoCAD command, but an Express Tool.]  Why the two B's?  I'd assume you typed a B, let auto-complete offer choices, and picked on BURST, but then the whole word should appear, not just B.