ListGrid booleanTrueImage not evaluating the same when upgrading SmartClient

[eoconnell]

Am upgrading from 7.0rc2 (built 2009-05-30) to v10.0p_2015-09-03/LGPL Deployment (built 2015-09-03) without making any code changes. ListGrid.create attributes include:
canEdit: false,
selectionType: "single",
alternateRecordStyles: true,
booleanFalseImage: null,
booleanTrueImage: "[APP]img/check.png".
True case is not resolving to the custom image as before:
For v7, when false, resolves to: <img src="http://[baseURL]/isomorphic/skins/TreeFrog/images/blank.gif"; when true: ><img src="http://[baseURL+appPath]/img/check.png" (using DOM Inspector)
For v10, when false, resolves to: background-image:url(&quot;http://&#91;baseURL]/isomorphic/skins/Tr...nk.gif&quot;); true resolves to: background-image: url(&quot;http://[baseURL+appPath]/img/check_Disabled.png&quot;)
Problem seems to be "_Disabled" appended to image reference. How do I correct this?

[Isomorphic]

check_Disabled is a valid state meaning that the checkbox appears disabled because the user cannot change it.

[eoconnell]

So there's been a change to the functionality where the name of a custom image is modified to insert "_Disabled" in the filename? This seems like a bug, possibly due to the filename "check" being a reserved name. Please clarify. I can workaround this by copying/renaming the image, but that seems like a kludge.

[Isomorphic]

Where exactly are you seeing this? We need to see runnable sample code where this is happening with a stock skin (no application-specific modifications).

[eoconnell]

I resolved this by creating a copy of check.png as check_Disabled.png since it is an expected filename.