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Problem solved with a lot of help from Dave; there were unspecified hidden character(s) present in the operatorPressed handler including the comments causing it to fail.
See Dave Kilroy breakdown for process followed to correct the problem.
Thanks for all contributions

Martin

Zipped file uploaded.

Hi Martin - shame this isn't working for you yet... If you can't see an 'upload files' tab like in the screenshot when you are in the 'post a reply' screen I think you must be below the minimum number of postings before you're allowed to upload files: Screen Shot 2015-02-06 at 10.51.57.png If you d...

get this message when loading attachment??

The extension livecode is not allowed.
This is really frustrating... will set up dropbox for you now if you can supply email address...

Aha! Good we are getting somewhere... If handlers are not appearing on the left then I think there is a bug in the card's script which is preventing it from compiling Probably the best way to find the bug is to comment out all the handlers except one and hit compile - if the one un-commented handle...

dave.kilroy wrote:Hi Martin - does numberPressed appear in the left-hand pane of the script editor like this?

Hi Dave,

The handlers are not showing in the left hand list and I have tried to find out why! When adding to card script they are not saving??
Is there an edit mode that needs switching on?

Thks

Martin

Martin--have found this now and will post in future to the private forum. Thks Linda. You can in fact get great help in this forum. However, you should look for the "Create it With LiveCode" forum where most of us have/are posting. If you don't have access--it is one of the private forums--then che...

Hi Dave,

The handlers are not showing in the left hand list and I have tried to find out why! When adding to card script they are not saving??
Is there an edit mode that needs switching on?

Thks

Martin

if I interchange "number" with "operator" its works as expected on the same card??
on mouseUp
operatorPressed the short name of me
end mouseUp

on mouseUp
numberPressed the short name of me
end mouseUp

Hi Klaus, This is in the Livecode Course for building the Calculator app. Here is the card script: In the window I don't see the added handler option. I have tried assiging the handler to the group for the number objects in the calculator. Does this make sense? local lCurrentOperator local lCurrentO...

Error message: executing at 10:57:32 AM Type Handler: can't find handler Object group id 1030 Line numberPressed the short name of the target Hint numberPressed Have checked all scripts and unable to determine problem. Spelling correct and new handler added to card script. Have the latest version of...