"Sort into subfolder" acting on folder, not just image

Hi,
"Sort into Subfolder" trying to act on folders also, even though the condition specifies that it should only act on images.
Any advice as to how to avoid this attempt to act on the folders? Copied below is the console dump from Hazel trying to evaluate the folders even though the condition specifies only if image.
Thank you!
---
Log output.
2015-05-09 12:18:11.288 hazelworker[98889] Error while matching rule rename and sort image files against file /Volumes/pm/camera uploads/2015-05: Could not retrieve metadata for file: /Volumes/pm/camera uploads/2015-05
2015-05-09 12:18:11.288 hazelworker[98889] ###main load address: 0x10c8df000
2015-05-09 12:18:11.289 hazelworker[98889] ###Noodle load address: 0x10c9ef000
2015-05-09 12:18:11.289 hazelworker[98889] ###CK load address: 0x10c9b3000
2015-05-09 12:18:11.289 hazelworker[98889] (
0 CoreFoundation 0x00007fff9814e03c __exceptionPreprocess + 172
1 libobjc.A.dylib 0x00007fff9596f76e objc_exception_throw + 43
2 hazelworker 0x000000010c911903 hazelworker + 207107
3 hazelworker 0x000000010c90d655 hazelworker + 190037
4 hazelworker 0x000000010c9252b6 hazelworker + 287414
5 Foundation 0x00007fff93556a7e -[NSPredicateOperator performOperationUsingObject:andObject:] + 285
6 Foundation 0x00007fff9355681d -[NSComparisonPredicate evaluateWithObject:substitutionVariables:] + 313
7 hazelworker 0x000000010c94718d hazelworker + 426381
8 hazelworker 0x000000010c947282 hazelworker + 426626
9 hazelworker 0x000000010c945e60 hazelworker + 421472
10 hazelworker 0x000000010c950a9e hazelworker + 465566
11 hazelworker 0x000000010c9443cb hazelworker + 414667
12 hazelworker 0x000000010c918723 hazelworker + 235299
13 hazelworker 0x000000010c8e6734 hazelworker + 30516
14 hazelworker 0x000000010c8e80e3 hazelworker + 37091
15 hazelworker 0x000000010c8e9e2d hazelworker + 44589
16 libdyld.dylib 0x00007fff96d0f5c9 start + 1
)
2015-05-09 12:18:11.294 hazelworker[98889] Done processing folder camera uploads
"Sort into Subfolder" trying to act on folders also, even though the condition specifies that it should only act on images.
Any advice as to how to avoid this attempt to act on the folders? Copied below is the console dump from Hazel trying to evaluate the folders even though the condition specifies only if image.
Thank you!
---
Log output.
2015-05-09 12:18:11.288 hazelworker[98889] Error while matching rule rename and sort image files against file /Volumes/pm/camera uploads/2015-05: Could not retrieve metadata for file: /Volumes/pm/camera uploads/2015-05
2015-05-09 12:18:11.288 hazelworker[98889] ###main load address: 0x10c8df000
2015-05-09 12:18:11.289 hazelworker[98889] ###Noodle load address: 0x10c9ef000
2015-05-09 12:18:11.289 hazelworker[98889] ###CK load address: 0x10c9b3000
2015-05-09 12:18:11.289 hazelworker[98889] (
0 CoreFoundation 0x00007fff9814e03c __exceptionPreprocess + 172
1 libobjc.A.dylib 0x00007fff9596f76e objc_exception_throw + 43
2 hazelworker 0x000000010c911903 hazelworker + 207107
3 hazelworker 0x000000010c90d655 hazelworker + 190037
4 hazelworker 0x000000010c9252b6 hazelworker + 287414
5 Foundation 0x00007fff93556a7e -[NSPredicateOperator performOperationUsingObject:andObject:] + 285
6 Foundation 0x00007fff9355681d -[NSComparisonPredicate evaluateWithObject:substitutionVariables:] + 313
7 hazelworker 0x000000010c94718d hazelworker + 426381
8 hazelworker 0x000000010c947282 hazelworker + 426626
9 hazelworker 0x000000010c945e60 hazelworker + 421472
10 hazelworker 0x000000010c950a9e hazelworker + 465566
11 hazelworker 0x000000010c9443cb hazelworker + 414667
12 hazelworker 0x000000010c918723 hazelworker + 235299
13 hazelworker 0x000000010c8e6734 hazelworker + 30516
14 hazelworker 0x000000010c8e80e3 hazelworker + 37091
15 hazelworker 0x000000010c8e9e2d hazelworker + 44589
16 libdyld.dylib 0x00007fff96d0f5c9 start + 1
)
2015-05-09 12:18:11.294 hazelworker[98889] Done processing folder camera uploads