error 91

[ms3389]

when trying to use random top and bottom generator I get following error

91: Object reference not set to an instance of an object.
sysetm.NullReferenceException: Object refrence not set to an instance of an object.
at Pgen2v1.2.4.0.frmPunPunGen.start() in U:\~PGen2_V1.2.4.0frmPunPunGen.vb:line554 start

[admin]

Thanks for letting me know, this will be corrected in the next release.