I have seen this happen when a VFP 6 launcher started a VFP 9 *.APP file. The VFP 9 *.APP file used a class that was added after VFP 6.
HTH, Tracy
-----Original Message----- From: ProfoxTech [mailto:profoxtech-bounces@leafe.com] On Behalf Of Chris Davis Sent: Monday, April 30, 2018 10:51 AM To: profoxtech@leafe.com Subject: Class Definition Not Found
Bit of a vague question but is anyone aware of any mis match of run time DLL's that might result in the error message in the subject. Maybe the VFP runtimes or the VC ones.
Thanks
Chris.