previous apps not opening in IB3

Trying to open my Halloween app in IB3 (tried a couple of the versions I have for it and none will open) received this message on one of the copies:

[do I need to rebuild the whole app?]

InteractBuilder Version: 3.2 Build 308

Device: 4313CTO

Processor: 1 Processor(s) Installed.

[01]: Intel64 Family 6 Model 37 Stepping 5 GenuineIntel ~2640 Mhz

Memory: 3,956 MB

System: NT 6.1

--------------------

An application error occurred while attempting to perform the last action.

Restarting InteractBuilder is recommended.

An application error occurred while attempting to perform the last action.

Restarting InteractBuilder is recommended.

Error: Chunk: can't find background / Chunk: can't find object / Object: does not have this property / put: error in expression

Handler: DoError

Hint: 

Location: Line 10919, char 20

Object: button id 1004 of card id 1002 of stack "Behaviors" of stack "C:/Program Files (x86)/InteractBuilder/Local Components/Data/InteractBuilder.livecode"

87: Line 10919 at char 20: Chunk: can't find background

77: Line 10919 at char 20: Chunk: can't find object

456: Line 10919 at char 8: Object: does not have this property

465: Line 10919 at char 1: put: error in expression

241: Line 10919 at char 1: Handler: error in statement ----> DoError

353: Line 0 at char 0: Object Name: ----> button id 1004 of card id 1002 of stack "Behaviors" of stack "C:/Program Files (x86)/InteractBuilder/Local Components/Data/InteractBuilder.livecode"

573: Line 4971 at char 1: Handler: can't find handler ----> DoError

253: Line 4968 at char 1: if-then: error in statement

253: Line 4953 at char 1: if-then: error in statement

253: Line 4949 at char 1: if-then: error in statement

253: Line 4947 at char 1: if-then: error in statement

241: Line 4947 at char 1: Handler: error in statement ----> CheckDBErr

353: Line 0 at char 0: Object Name: ----> stack "libApp" of stack "C:/Program Files (x86)/InteractBuilder/Local Components/Data/InteractBuilder.livecode"

219: Line 5119 at char 8: Function: error in function handler ----> CheckDBErr

223: Line 5119 at char 1: get: error in expression

241: Line 5119 at char 1: Handler: error in statement ----> IBDB_UpdateRecord

353: Line 0 at char 0: Object Name: ----> stack "libApp" of stack "C:/Program Files (x86)/InteractBuilder/Local Components/Data/InteractBuilder.livecode"

573: Line 1595 at char 1: Handler: can't find handler ----> IBDB_UpdateRecord

490: Line 1591 at char 1: repeat: error in statement

253: Line 1590 at char 1: if-then: error in statement

253: Line 1562 at char 1: if-then: error in statement

253: Line 1553 at char 1: if-then: error in statement

490: Line 1542 at char 1: repeat: error in statement

253: Line 1523 at char 1: if-then: error in statement

241: Line 1523 at char 1: Handler: error in statement ----> UpdateDB

353: Line 0 at char 0: Object Name: ----> button id 1007 of group id 1010 of card id 1002 of stack "Behaviors" of stack "C:/Program Files (x86)/InteractBuilder/Local Components/Data/InteractBuilder.livecode"

573: Line 723 at char 1: Handler: can't find handler ----> UpdateDB

253: Line 722 at char 1: if-then: error in statement

253: Line 721 at char 1: if-then: error in statement

253: Line 699 at char 1: if-then: error in statement

253: Line 695 at char 1: if-then: error in statement

587: Line 688 at char 1: switch: error in statement

241: Line 688 at char 1: Handler: error in statement ----> LoadApp

353: Line 0 at char 0: Object Name: ----> button id 1007 of group id 1010 of card id 1002 of stack "Behaviors" of stack "C:/Program Files (x86)/InteractBuilder/Local Components/Data/InteractBuilder.livecode"

573: Line 62 at char 1: Handler: can't find handler ----> LoadApp

253: Line 55 at char 1: if-then: error in statement

253: Line 54 at char 1: if-then: error in statement

253: Line 51 at char 1: if-then: error in statement

253: Line 47 at char 1: if-then: error in statement

253: Line 43 at char 1: if-then: error in statement

253: Line 40 at char 1: if-then: error in statement

241: Line 40 at char 1: Handler: error in statement ----> mouseUp

353: Line 0 at char 0: Object Name: ----> button id 3000735 of card id 1002 of stack "IBResources" of stack "C:/Program Files (x86)/InteractBuilder/Local Components/Data/InteractBuilder.livecode"

line 150 of handler "errorDialog" of button "stsErrors_FS" of card id 1002 of stack "libSTSErrors"

line 10946 of handler "DoError" of stack "InteractBuilder" of behavior button "Stack B" of card id 1002 of stack "Behaviors"